diff --git a/packages/flutter_tools/lib/executable.dart b/packages/flutter_tools/lib/executable.dart
index 27545c17b96..1da7b6ee09d 100644
--- a/packages/flutter_tools/lib/executable.dart
+++ b/packages/flutter_tools/lib/executable.dart
@@ -6,9 +6,9 @@ import 'dart:async';
 import 'dart:io';
 
 import 'package:args/command_runner.dart';
-import 'package:logging/logging.dart';
 import 'package:stack_trace/stack_trace.dart';
 
+import 'src/base/context.dart';
 import 'src/base/process.dart';
 import 'src/commands/analyze.dart';
 import 'src/commands/apk.dart';
@@ -33,28 +33,6 @@ import 'src/runner/flutter_command_runner.dart';
 ///
 /// This function is intended to be used from the [flutter] command line tool.
 Future main(List<String> args) async {
-  DateTime startTime = new DateTime.now();
-
-  // This level can be adjusted by users through the `--verbose` option.
-  Logger.root.level = Level.WARNING;
-  Logger.root.onRecord.listen((LogRecord record) {
-    String prefix = '';
-    if (Logger.root.level <= Level.FINE) {
-      Duration elapsed = record.time.difference(startTime);
-      prefix = '[${elapsed.inMilliseconds.toString().padLeft(4)} ms] ';
-    }
-    String level = record.level.name.toLowerCase();
-    if (record.level >= Level.WARNING) {
-      stderr.writeln('$prefix$level: ${record.message}');
-    } else {
-      print('$prefix$level: ${record.message}');
-    }
-    if (record.error != null)
-      stderr.writeln(record.error);
-    if (record.stackTrace != null)
-      stderr.writeln(record.stackTrace);
-  });
-
   FlutterCommandRunner runner = new FlutterCommandRunner()
     ..addCommand(new AnalyzeCommand())
     ..addCommand(new ApkCommand())
@@ -92,8 +70,7 @@ Future main(List<String> args) async {
       // We've caught an exit code.
       exit(error.exitCode);
     } else {
-      stderr.writeln(error);
-      Logger.root.log(Level.SEVERE, '\nException:', null, chain.terse.toTrace());
+      printError(error, chain.terse.toTrace());
       exit(1);
     }
   });
diff --git a/packages/flutter_tools/lib/src/android/adb.dart b/packages/flutter_tools/lib/src/android/adb.dart
index e3d2eace16c..207f2d19f91 100644
--- a/packages/flutter_tools/lib/src/android/adb.dart
+++ b/packages/flutter_tools/lib/src/android/adb.dart
@@ -5,7 +5,7 @@
 import 'dart:async';
 import 'dart:io';
 
-import '../base/logging.dart';
+import '../base/context.dart';
 import '../base/process.dart';
 
 // https://android.googlesource.com/platform/system/core/+/android-4.4_r1/adb/OVERVIEW.TXT
@@ -83,11 +83,11 @@ class Adb {
     controller = new StreamController(
       onListen: () async {
         socket = await Socket.connect(InternetAddress.LOOPBACK_IP_V4, adbServerPort);
-        logging.fine('--> host:track-devices');
+        printTrace('--> host:track-devices');
         socket.add(_createAdbRequest('host:track-devices'));
         socket.listen((List<int> data) {
           String stringResult = new String.fromCharCodes(data);
-          logging.fine('<-- ${stringResult.trim()}');
+          printTrace('<-- ${stringResult.trim()}');
           _AdbServerResponse response = new _AdbServerResponse(
             stringResult,
             noStatus: !isFirstNotification
@@ -116,14 +116,14 @@ class Adb {
     Socket socket = await Socket.connect(InternetAddress.LOOPBACK_IP_V4, adbServerPort);
 
     try {
-      logging.fine('--> $command');
+      printTrace('--> $command');
       socket.add(_createAdbRequest(command));
       List<List<int>> result = await socket.toList();
       List<int> data = result.fold(<int>[], (List<int> previous, List<int> element) {
         return previous..addAll(element);
       });
       String stringResult = new String.fromCharCodes(data);
-      logging.fine('<-- ${stringResult.trim()}');
+      printTrace('<-- ${stringResult.trim()}');
       return stringResult;
     } finally {
       socket.destroy();
diff --git a/packages/flutter_tools/lib/src/android/device_android.dart b/packages/flutter_tools/lib/src/android/device_android.dart
index 5881a383ce9..b62c4156d46 100644
--- a/packages/flutter_tools/lib/src/android/device_android.dart
+++ b/packages/flutter_tools/lib/src/android/device_android.dart
@@ -9,7 +9,7 @@ import 'package:crypto/crypto.dart';
 import 'package:path/path.dart' as path;
 
 import '../application_package.dart';
-import '../base/logging.dart';
+import '../base/context.dart';
 import '../base/process.dart';
 import '../build_configuration.dart';
 import '../device.dart';
@@ -74,7 +74,7 @@ class AndroidDevice extends Device {
     _hasValidAndroid = _checkForSupportedAndroidVersion();
 
     if (!_hasAdb || !_hasValidAndroid) {
-      logging.warning('Unable to run on Android.');
+      printError('Unable to run on Android.');
     }
   }
 
@@ -88,11 +88,11 @@ class AndroidDevice extends Device {
           path.join(androidHomeDir, 'sdk', 'platform-tools'))) {
         return path.join(androidHomeDir, 'sdk');
       } else {
-        logging.warning('Android SDK not found at $androidHomeDir');
+        printError('Android SDK not found at $androidHomeDir');
         return null;
       }
     } else {
-      logging.warning('Android SDK not found. The ANDROID_HOME variable must be set.');
+      printError('Android SDK not found. The ANDROID_HOME variable must be set.');
       return null;
     }
   }
@@ -125,7 +125,7 @@ class AndroidDevice extends Device {
       }
       return false;
     }
-    logging.warning(
+    printError(
         'Unrecognized adb version string $adbVersion. Skipping version check.');
     return true;
   }
@@ -138,16 +138,15 @@ class AndroidDevice extends Device {
       }
 
       String locatedAdbPath = runCheckedSync(['which', 'adb']);
-      logging.severe('"$locatedAdbPath" is too old. '
+      printError('"$locatedAdbPath" is too old. '
           'Please install version 1.0.32 or later.\n'
           'Try setting ANDROID_HOME to the path to your Android SDK install. '
           'Android builds are unavailable.');
-    } catch (e, stack) {
-      logging.severe('"adb" not found in \$PATH. '
+    } catch (e) {
+      printError('"adb" not found in \$PATH. '
           'Please install the Android SDK or set ANDROID_HOME '
           'to the path of your Android SDK install.');
-      logging.info(e);
-      logging.info(stack);
+      printTrace('$e');
     }
     return false;
   }
@@ -162,7 +161,7 @@ class AndroidDevice extends Device {
 
       String ready = runSync(adbCommandForDevice(['shell', 'echo', 'ready']));
       if (ready.trim() != 'ready') {
-        logging.info('Android device not found.');
+        printTrace('Android device not found.');
         return false;
       }
 
@@ -174,18 +173,18 @@ class AndroidDevice extends Device {
       int sdkVersionParsed =
           int.parse(sdkVersion, onError: (String source) => null);
       if (sdkVersionParsed == null) {
-        logging.severe('Unexpected response from getprop: "$sdkVersion"');
+        printError('Unexpected response from getprop: "$sdkVersion"');
         return false;
       }
       if (sdkVersionParsed < minApiLevel) {
-        logging.severe(
+        printError(
           'The Android version ($sdkVersion) on the target device is too old. Please '
           'use a $minVersionName (version $minApiLevel / $minVersionText) device or later.');
         return false;
       }
       return true;
     } catch (e) {
-      logging.severe('Unexpected failure from adb: ', e);
+      printError('Unexpected failure from adb: $e');
     }
     return false;
   }
@@ -213,12 +212,11 @@ class AndroidDevice extends Device {
       return false;
     }
     if (runCheckedSync(adbCommandForDevice(['shell', 'pm', 'path', app.id])) == '') {
-      logging.info(
-          'TODO(iansf): move this log to the caller. ${app.name} is not on the device. Installing now...');
+      printTrace('TODO(iansf): move this log to the caller. ${app.name} is not on the device. Installing now...');
       return false;
     }
     if (_getDeviceApkSha1(app) != _getSourceSha1(app)) {
-      logging.info(
+      printTrace(
           'TODO(iansf): move this log to the caller. ${app.name} is out of date. Installing now...');
       return false;
     }
@@ -228,17 +226,17 @@ class AndroidDevice extends Device {
   @override
   bool installApp(ApplicationPackage app) {
     if (!isConnected()) {
-      logging.info('Android device not connected. Not installing.');
+      printTrace('Android device not connected. Not installing.');
       return false;
     }
     if (!FileSystemEntity.isFileSync(app.localPath)) {
-      logging.severe('"${app.localPath}" does not exist.');
+      printError('"${app.localPath}" does not exist.');
       return false;
     }
 
-    print('Installing ${app.name} on device.');
-    runCheckedSync(adbCommandForDevice(['install', '-r', app.localPath]));
-    runCheckedSync(adbCommandForDevice(['shell', 'echo', '-n', _getSourceSha1(app), '>', _getDeviceSha1Path(app)]));
+    printStatus('Installing ${app.name} on device.');
+    runCheckedSync(adbCommandForDevice(<String>['install', '-r', app.localPath]));
+    runCheckedSync(adbCommandForDevice(<String>['shell', 'echo', '-n', _getSourceSha1(app), '>', _getDeviceSha1Path(app)]));
     return true;
   }
 
@@ -246,9 +244,9 @@ class AndroidDevice extends Device {
     // Set up port forwarding for observatory.
     String portString = 'tcp:$_observatoryPort';
     try {
-      runCheckedSync(adbCommandForDevice(['forward', portString, portString]));
+      runCheckedSync(adbCommandForDevice(<String>['forward', portString, portString]));
     } catch (e) {
-      logging.warning('Unable to forward observatory port ($_observatoryPort):\n$e');
+      printError('Unable to forward observatory port ($_observatoryPort):\n$e');
     }
   }
 
@@ -259,10 +257,10 @@ class AndroidDevice extends Device {
     String route,
     bool clearLogs: false
   }) {
-    logging.fine('$this startBundle');
+    printTrace('$this startBundle');
 
     if (!FileSystemEntity.isFileSync(bundlePath)) {
-      logging.severe('Cannot find $bundlePath');
+      printError('Cannot find $bundlePath');
       return false;
     }
 
@@ -303,7 +301,7 @@ class AndroidDevice extends Device {
       toolchain,
       mainPath: mainPath
     ).then((flx.DirectoryResult buildResult) {
-      logging.fine('Starting bundle for $this.');
+      printTrace('Starting bundle for $this.');
 
       try {
         if (startBundle(
@@ -426,7 +424,7 @@ class AndroidDevice extends Device {
       ));
       return localPath;
     }
-    logging.warning('No trace file detected. '
+    printError('No trace file detected. '
         'Did you remember to start the trace before stopping it?');
     return null;
   }
@@ -447,7 +445,7 @@ List<AndroidDevice> getAdbDevices([AndroidDevice mockAndroid]) {
   try {
     runCheckedSync([adbPath, 'version']);
   } catch (e) {
-    logging.severe('Unable to find adb. Is "adb" in your path?');
+    printError('Unable to find adb. Is "adb" in your path?');
     return devices;
   }
 
@@ -497,16 +495,16 @@ List<AndroidDevice> getAdbDevices([AndroidDevice mockAndroid]) {
     } else if (unauthorizedRegex.hasMatch(line)) {
       Match match = unauthorizedRegex.firstMatch(line);
       String deviceID = match[1];
-      logging.warning(
+      printError(
         'Device $deviceID is not authorized.\n'
         'You might need to check your device for an authorization dialog.'
       );
     } else if (offlineRegex.hasMatch(line)) {
       Match match = offlineRegex.firstMatch(line);
       String deviceID = match[1];
-      logging.warning('Device $deviceID is offline.');
+      printError('Device $deviceID is offline.');
     } else {
-      logging.warning(
+      printError(
         'Unexpected failure parsing device information from adb output:\n'
         '$line\n'
         'Please report a bug at https://github.com/flutter/flutter/issues/new');
@@ -525,7 +523,7 @@ String getAdbPath() {
     } else if (FileSystemEntity.isFileSync(adbPath2)) {
       return adbPath2;
     } else {
-      logging.info('"adb" not found at\n  "$adbPath1" or\n  "$adbPath2"\n' +
+      printTrace('"adb" not found at\n  "$adbPath1" or\n  "$adbPath2"\n' +
           'using default path "$_defaultAdbPath"');
       return _defaultAdbPath;
     }
diff --git a/packages/flutter_tools/lib/src/artifacts.dart b/packages/flutter_tools/lib/src/artifacts.dart
index dfc16c864a4..ee2667186d4 100644
--- a/packages/flutter_tools/lib/src/artifacts.dart
+++ b/packages/flutter_tools/lib/src/artifacts.dart
@@ -8,7 +8,7 @@ import 'dart:io';
 import 'package:archive/archive.dart';
 import 'package:path/path.dart' as path;
 
-import 'base/logging.dart';
+import 'base/context.dart';
 import 'base/os.dart';
 import 'base/process.dart';
 import 'build_configuration.dart';
@@ -187,7 +187,7 @@ class ArtifactStore {
         else
           message += '\nDid you run this command from the same directory as your pubspec.yaml file?';
       }
-      stderr.writeln(message);
+      printError(message);
       throw new ProcessExit(2);
     }
   }
@@ -195,7 +195,7 @@ class ArtifactStore {
   static void ensureHasSkyEnginePackage() {
     Directory skyEnginePackage = new Directory(path.join(packageRoot, 'sky_engine'));
     if (!skyEnginePackage.existsSync()) {
-      stderr.writeln("Cannot locate the sky_engine package; did you include 'flutter' in your pubspec.yaml file?");
+      printError("Cannot locate the sky_engine package; did you include 'flutter' in your pubspec.yaml file?");
       throw new ProcessExit(2);
     }
   }
@@ -221,12 +221,12 @@ class ArtifactStore {
 
   /// Download a file from the given URL and return the bytes.
   static Future<List<int>> _downloadFile(Uri url) async {
-    logging.info('Downloading $url.');
+    printStatus('Downloading $url.');
 
     HttpClient httpClient = new HttpClient();
     HttpClientRequest request = await httpClient.getUrl(url);
     HttpClientResponse response = await request.close();
-    logging.fine('Received response statusCode=${response.statusCode}');
+    printTrace('Received response statusCode=${response.statusCode}');
     if (response.statusCode != 200)
       throw new Exception(response.reasonPhrase);
 
@@ -276,7 +276,7 @@ class ArtifactStore {
     if (_pendingZipDownloads.containsKey(platform)) {
       return _pendingZipDownloads[platform];
     }
-    print('Downloading $platform artifacts from the cloud, one moment please...');
+    printStatus('Downloading $platform artifacts from the cloud, one moment please...');
     Future future = _doDownloadArtifactsFromZip(platform);
     _pendingZipDownloads[platform] = future;
     return future.then((_) => _pendingZipDownloads.remove(platform));
@@ -286,7 +286,7 @@ class ArtifactStore {
 
   static Directory _getBaseCacheDir() {
     if (flutterRoot == null) {
-      logging.severe('FLUTTER_ROOT not specified. Cannot find artifact cache.');
+      printError('FLUTTER_ROOT not specified. Cannot find artifact cache.');
       throw new ProcessExit(2);
     }
     Directory cacheDir = new Directory(path.join(flutterRoot, 'bin', 'cache', 'artifacts'));
@@ -313,7 +313,7 @@ class ArtifactStore {
     if (!cachedFile.existsSync()) {
       await _downloadArtifactsFromZip(artifact.platform);
       if (!cachedFile.existsSync()) {
-        logging.severe('File not found in the platform artifacts: ${cachedFile.path}');
+        printError('File not found in the platform artifacts: ${cachedFile.path}');
         throw new ProcessExit(2);
       }
     }
@@ -331,7 +331,7 @@ class ArtifactStore {
       try {
         await _downloadFileToCache(url, cachedFile);
       } catch (e) {
-        logging.severe('Failed to fetch third-party artifact: $url: $e');
+        printError('Failed to fetch third-party artifact: $url: $e');
         throw new ProcessExit(2);
       }
     }
@@ -340,7 +340,7 @@ class ArtifactStore {
 
   static void clear() {
     Directory cacheDir = _getBaseCacheDir();
-    logging.fine('Clearing cache directory ${cacheDir.path}');
+    printTrace('Clearing cache directory ${cacheDir.path}');
     cacheDir.deleteSync(recursive: true);
   }
 
diff --git a/packages/flutter_tools/lib/src/base/context.dart b/packages/flutter_tools/lib/src/base/context.dart
new file mode 100644
index 00000000000..21054a4416d
--- /dev/null
+++ b/packages/flutter_tools/lib/src/base/context.dart
@@ -0,0 +1,70 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+import 'dart:async';
+import 'dart:io';
+
+final AppContext _defaultContext = new _DefaultAppContext();
+
+/// A singleton for application functionality. This singleton can be different
+/// on a per-Zone basis.
+AppContext get context {
+  AppContext currentContext = Zone.current['context'];
+  return currentContext == null ? _defaultContext : currentContext;
+}
+
+/// Display an error level message to the user. Commands should use this if they
+/// fail in some way.
+void printError(String message, [StackTrace stackTrace]) => context.printError(message, stackTrace);
+
+/// Display normal output of the command. This should be used for things like
+/// progress messages, success messages, or just normal command output.
+void printStatus(String message) => context.printStatus(message);
+
+/// Use this for verbose tracing output. Users can turn this output on in order
+/// to help diagnose issues with the toolchain or with their setup.
+void printTrace(String message) => context.printTrace(message);
+
+abstract class AppContext {
+  bool get verbose;
+  set verbose(bool value);
+
+  void printError(String message, [StackTrace stackTrace]);
+  void printStatus(String message);
+  void printTrace(String message);
+}
+
+class _DefaultAppContext implements AppContext {
+  DateTime _startTime = new DateTime.now();
+
+  bool _verbose = false;
+
+  bool get verbose => _verbose;
+
+  set verbose(bool value) {
+    _verbose = value;
+  }
+
+  void printError(String message, [StackTrace stackTrace]) {
+    stderr.writeln(_prefix + message);
+    if (stackTrace != null)
+      stderr.writeln(stackTrace);
+  }
+
+  void printStatus(String message) {
+    print(_prefix + message);
+  }
+
+  void printTrace(String message) {
+    if (_verbose)
+      print('$_prefix- $message');
+  }
+
+  String get _prefix {
+    if (!_verbose)
+      return '';
+    Duration elapsed = new DateTime.now().difference(_startTime);
+    return '[${elapsed.inMilliseconds.toString().padLeft(4)} ms] ';
+  }
+}
diff --git a/packages/flutter_tools/lib/src/base/logging.dart b/packages/flutter_tools/lib/src/base/logging.dart
deleted file mode 100644
index 4774b4e606a..00000000000
--- a/packages/flutter_tools/lib/src/base/logging.dart
+++ /dev/null
@@ -1,7 +0,0 @@
-// Copyright 2015 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-import 'package:logging/logging.dart';
-
-final Logger logging = new Logger('flutter_tools');
diff --git a/packages/flutter_tools/lib/src/base/process.dart b/packages/flutter_tools/lib/src/base/process.dart
index b12b2748916..3fb4b232e92 100644
--- a/packages/flutter_tools/lib/src/base/process.dart
+++ b/packages/flutter_tools/lib/src/base/process.dart
@@ -6,7 +6,7 @@ import 'dart:async';
 import 'dart:convert';
 import 'dart:io';
 
-import 'logging.dart';
+import 'context.dart';
 
 /// This runs the command and streams stdout/stderr from the child process to
 /// this process' stdout/stderr.
@@ -15,7 +15,7 @@ Future<int> runCommandAndStreamOutput(List<String> cmd, {
   RegExp filter,
   String workingDirectory
 }) async {
-  logging.info(cmd.join(' '));
+  printTrace(cmd.join(' '));
   Process process = await Process.start(
     cmd[0],
     cmd.sublist(1),
@@ -28,7 +28,7 @@ Future<int> runCommandAndStreamOutput(List<String> cmd, {
       dataLines = dataLines.where((String s) => filter.hasMatch(s)).toList();
     }
     if (dataLines.length > 0) {
-      stdout.write('$prefix${dataLines.join('\n$prefix')}\n');
+      printStatus('$prefix${dataLines.join('\n$prefix')}');
     }
   });
   process.stderr.transform(UTF8.decoder).listen((String data) {
@@ -38,7 +38,7 @@ Future<int> runCommandAndStreamOutput(List<String> cmd, {
       dataLines = dataLines.where((String s) => filter.hasMatch(s));
     }
     if (dataLines.length > 0) {
-      stderr.write('$prefix${dataLines.join('\n$prefix')}\n');
+      printError('$prefix${dataLines.join('\n$prefix')}');
     }
   });
   return await process.exitCode;
@@ -47,13 +47,13 @@ Future<int> runCommandAndStreamOutput(List<String> cmd, {
 Future runAndKill(List<String> cmd, Duration timeout) {
   Future<Process> proc = runDetached(cmd);
   return new Future.delayed(timeout, () async {
-    logging.info('Intentionally killing ${cmd[0]}');
+    printTrace('Intentionally killing ${cmd[0]}');
     Process.killPid((await proc).pid);
   });
 }
 
 Future<Process> runDetached(List<String> cmd) {
-  logging.info(cmd.join(' '));
+  printTrace(cmd.join(' '));
   Future<Process> proc = Process.start(
       cmd[0], cmd.getRange(1, cmd.length).toList(),
       mode: ProcessStartMode.DETACHED);
@@ -81,20 +81,20 @@ String _runWithLoggingSync(List<String> cmd, {
   bool checked: false,
   String workingDirectory
 }) {
-  logging.info(cmd.join(' '));
+  printTrace(cmd.join(' '));
   ProcessResult results =
       Process.runSync(cmd[0], cmd.getRange(1, cmd.length).toList(), workingDirectory: workingDirectory);
   if (results.exitCode != 0) {
     String errorDescription = 'Error code ${results.exitCode} '
         'returned when attempting to run command: ${cmd.join(' ')}';
-    logging.info(errorDescription);
+    printTrace(errorDescription);
     if (results.stderr.length > 0)
-      logging.info('Errors logged: ${results.stderr.trim()}');
+      printTrace('Errors logged: ${results.stderr.trim()}');
     if (checked)
       throw errorDescription;
   }
   if (results.stdout.trim().isNotEmpty)
-    logging.fine(results.stdout.trim());
+    printTrace(results.stdout.trim());
   return results.stdout;
 }
 
diff --git a/packages/flutter_tools/lib/src/build_configuration.dart b/packages/flutter_tools/lib/src/build_configuration.dart
index 938729df30e..82a5bbbe7c9 100644
--- a/packages/flutter_tools/lib/src/build_configuration.dart
+++ b/packages/flutter_tools/lib/src/build_configuration.dart
@@ -6,7 +6,7 @@ import 'dart:io';
 
 import 'package:path/path.dart' as path;
 
-import 'base/logging.dart';
+import 'base/context.dart';
 
 enum BuildType {
   prebuilt,
@@ -32,7 +32,7 @@ HostPlatform getCurrentHostPlatform() {
     return HostPlatform.mac;
   if (Platform.isLinux)
     return HostPlatform.linux;
-  logging.warning('Unsupported host platform, defaulting to Linux');
+  printError('Unsupported host platform, defaulting to Linux');
   return HostPlatform.linux;
 }
 
@@ -41,7 +41,7 @@ TargetPlatform getCurrentHostPlatformAsTarget() {
     return TargetPlatform.mac;
   if (Platform.isLinux)
     return TargetPlatform.linux;
-  logging.warning('Unsupported host platform, defaulting to Linux');
+  printError('Unsupported host platform, defaulting to Linux');
   return TargetPlatform.linux;
 }
 
diff --git a/packages/flutter_tools/lib/src/commands/analyze.dart b/packages/flutter_tools/lib/src/commands/analyze.dart
index 6736575ad0f..240cbe445fb 100644
--- a/packages/flutter_tools/lib/src/commands/analyze.dart
+++ b/packages/flutter_tools/lib/src/commands/analyze.dart
@@ -11,7 +11,7 @@ import 'package:den_api/den_api.dart';
 import 'package:path/path.dart' as path;
 
 import '../artifacts.dart';
-import '../base/logging.dart';
+import '../base/context.dart';
 import '../base/process.dart';
 import '../build_configuration.dart';
 import '../runner/flutter_command.dart';
@@ -188,7 +188,7 @@ class AnalyzeCommand extends FlutterCommand {
         String packageName = pubSpecYaml.name;
         String packagePath = path.normalize(path.absolute(path.join(directory.path, 'lib')));
         if (packages.containsKey(packageName) && packages[packageName] != packagePath) {
-          logging.warning('Inconsistent requirements for $packageName; using $packagePath (and not ${packages[packageName]}).');
+          printError('Inconsistent requirements for $packageName; using $packagePath (and not ${packages[packageName]}).');
           hadInconsistentRequirements = true;
         }
         packages[packageName] = packagePath;
@@ -208,7 +208,7 @@ class AnalyzeCommand extends FlutterCommand {
         for (String package in dependencies.keys) {
           if (packages.containsKey(package)) {
             if (packages[package] != dependencies[package]) {
-              logging.warning('Inconsistent requirements for $package; using ${packages[package]} (and not ${dependencies[package]}).');
+              printError('Inconsistent requirements for $package; using ${packages[package]} (and not ${dependencies[package]}).');
               hadInconsistentRequirements = true;
             }
           } else {
@@ -219,9 +219,9 @@ class AnalyzeCommand extends FlutterCommand {
     }
     if (hadInconsistentRequirements) {
       if (foundAnyInFlutterRepo)
-        logging.warning('You may need to run "dart ${path.normalize(path.relative(path.join(ArtifactStore.flutterRoot, 'dev/update_packages.dart')))} --upgrade".');
+        printError('You may need to run "dart ${path.normalize(path.relative(path.join(ArtifactStore.flutterRoot, 'dev/update_packages.dart')))} --upgrade".');
       if (foundAnyInCurrentDirectory)
-        logging.warning('You may need to run "pub upgrade".');
+        printError('You may need to run "pub upgrade".');
     }
 
     String buildDir = buildConfigurations.firstWhere((BuildConfiguration config) => config.testable, orElse: () => null)?.buildDir;
@@ -256,7 +256,7 @@ class AnalyzeCommand extends FlutterCommand {
       mainFile.path
     ];
 
-    logging.info(cmd.join(' '));
+    printStatus(cmd.join(' '));
     Process process = await Process.start(
       cmd[0],
       cmd.sublist(1),
@@ -270,7 +270,7 @@ class AnalyzeCommand extends FlutterCommand {
     process.stderr.transform(UTF8.decoder).listen((String data) {
       // dartanalyzer doesn't seem to ever output anything on stderr
       errorCount += 1;
-      print(data);
+      printError(data);
     });
 
     int exitCode = await process.exitCode;
@@ -336,7 +336,7 @@ class AnalyzeCommand extends FlutterCommand {
           if (shouldIgnore)
             continue;
         }
-        print(errorLine);
+        printError(errorLine);
         errorCount += 1;
       }
     }
@@ -349,7 +349,7 @@ class AnalyzeCommand extends FlutterCommand {
     if (errorCount > 0)
       return 1; // Doesn't this mean 'hints' per the above comment?
     if (argResults['congratulate'])
-      print('No analyzer warnings! (ran in ${elapsed}s)');
+      printStatus('No analyzer warnings! (ran in ${elapsed}s)');
     return 0;
   }
 }
diff --git a/packages/flutter_tools/lib/src/commands/apk.dart b/packages/flutter_tools/lib/src/commands/apk.dart
index b5e5c6078d8..ac0f5dc41b9 100644
--- a/packages/flutter_tools/lib/src/commands/apk.dart
+++ b/packages/flutter_tools/lib/src/commands/apk.dart
@@ -11,8 +11,8 @@ import 'package:yaml/yaml.dart';
 
 import '../android/device_android.dart';
 import '../artifacts.dart';
+import '../base/context.dart';
 import '../base/file_system.dart';
-import '../base/logging.dart';
 import '../base/process.dart';
 import '../build_configuration.dart';
 import '../flx.dart' as flx;
@@ -251,25 +251,25 @@ class ApkCommand extends FlutterCommand {
 
     if (!components.resources.existsSync()) {
       // TODO(eseidel): This level should be higher when path is manually set.
-      logging.info('Can not locate Resources: ${components.resources}, ignoring.');
+      printStatus('Can not locate Resources: ${components.resources}, ignoring.');
       components.resources = null;
     }
 
     if (!components.androidSdk.existsSync()) {
-      logging.severe('Can not locate Android SDK: $androidSdkPath');
+      printError('Can not locate Android SDK: $androidSdkPath');
       return null;
     }
     if (!(new _ApkBuilder(components.androidSdk.path).checkSdkPath())) {
-      logging.severe('Can not locate expected Android SDK tools at $androidSdkPath');
-      logging.severe('You must install version $_kAndroidPlatformVersion of the SDK platform');
-      logging.severe('and version $_kBuildToolsVersion of the build tools.');
+      printError('Can not locate expected Android SDK tools at $androidSdkPath');
+      printError('You must install version $_kAndroidPlatformVersion of the SDK platform');
+      printError('and version $_kBuildToolsVersion of the build tools.');
       return null;
     }
     for (File f in [components.manifest, components.icuData,
                     components.libSkyShell, components.debugKeystore]
                     ..addAll(components.jars)) {
       if (!f.existsSync()) {
-        logging.severe('Can not locate file: ${f.path}');
+        printError('Can not locate file: ${f.path}');
         return null;
       }
     }
@@ -327,7 +327,7 @@ class ApkCommand extends FlutterCommand {
       ensureDirectoryExists(finalApk.path);
       builder.align(unalignedApk, finalApk);
 
-      print('APK generated: ${finalApk.path}');
+      printStatus('APK generated: ${finalApk.path}');
 
       return 0;
     } finally {
@@ -342,7 +342,7 @@ class ApkCommand extends FlutterCommand {
     String keyPassword;
 
     if (argResults['keystore'].isEmpty) {
-      logging.warning('Signing the APK using the debug keystore');
+      printError('Signing the APK using the debug keystore');
       keystore = components.debugKeystore;
       keystorePassword = _kDebugKeystorePassword;
       keyAlias = _kDebugKeystoreKeyAlias;
@@ -352,7 +352,7 @@ class ApkCommand extends FlutterCommand {
       keystorePassword = argResults['keystore-password'];
       keyAlias = argResults['keystore-key-alias'];
       if (keystorePassword.isEmpty || keyAlias.isEmpty) {
-        logging.severe('Must provide a keystore password and a key alias');
+        printError('Must provide a keystore password and a key alias');
         return 1;
       }
       keyPassword = argResults['keystore-key-password'];
@@ -373,7 +373,7 @@ class ApkCommand extends FlutterCommand {
 
     _ApkComponents components = await _findApkComponents(config);
     if (components == null) {
-      logging.severe('Unable to build APK.');
+      printError('Unable to build APK.');
       return 1;
     }
 
@@ -381,8 +381,8 @@ class ApkCommand extends FlutterCommand {
 
     if (!flxPath.isEmpty) {
       if (!FileSystemEntity.isFileSync(flxPath)) {
-        logging.severe('FLX does not exist: $flxPath');
-        logging.severe('(Omit the --flx option to build the FLX automatically)');
+        printError('FLX does not exist: $flxPath');
+        printError('(Omit the --flx option to build the FLX automatically)');
         return 1;
       }
       return _buildApk(components, flxPath);
diff --git a/packages/flutter_tools/lib/src/commands/build.dart b/packages/flutter_tools/lib/src/commands/build.dart
index 000957e6bdb..72355c88848 100644
--- a/packages/flutter_tools/lib/src/commands/build.dart
+++ b/packages/flutter_tools/lib/src/commands/build.dart
@@ -4,7 +4,7 @@
 
 import 'dart:async';
 
-import '../base/logging.dart';
+import '../base/context.dart';
 import '../flx.dart';
 import '../runner/flutter_command.dart';
 import '../toolchain.dart';
@@ -45,9 +45,9 @@ class BuildCommand extends FlutterCommand {
       precompiledSnapshot: argResults['precompiled']
     ).then((int result) {
       if (result == 0)
-        print('Built $outputPath.');
+        printStatus('Built $outputPath.');
       else
-        logging.severe('Error building $outputPath: $result.');
+        printError('Error building $outputPath: $result.');
       return result;
     });
   }
diff --git a/packages/flutter_tools/lib/src/commands/create.dart b/packages/flutter_tools/lib/src/commands/create.dart
index a05fc9cf939..6e93e3657b4 100644
--- a/packages/flutter_tools/lib/src/commands/create.dart
+++ b/packages/flutter_tools/lib/src/commands/create.dart
@@ -11,7 +11,7 @@ import 'package:path/path.dart' as path;
 
 import '../android/android.dart' as android;
 import '../artifacts.dart';
-import '../base/logging.dart';
+import '../base/context.dart';
 import '../base/process.dart';
 
 class CreateCommand extends Command {
@@ -28,21 +28,21 @@ class CreateCommand extends Command {
   @override
   Future<int> run() async {
     if (!argResults.wasParsed('out')) {
-      print('No option specified for the output directory.');
-      print(argParser.usage);
+      printStatus('No option specified for the output directory.');
+      printStatus(argParser.usage);
       return 2;
     }
 
     if (ArtifactStore.flutterRoot == null) {
-      stderr.writeln('Neither the --flutter-root command line flag nor the FLUTTER_ROOT environment');
-      stderr.writeln('variable was specified. Unable to find package:flutter.');
+      printError('Neither the --flutter-root command line flag nor the FLUTTER_ROOT environment');
+      printError('variable was specified. Unable to find package:flutter.');
       return 2;
     }
     String flutterRoot = path.absolute(ArtifactStore.flutterRoot);
 
     String flutterPackagePath = path.join(flutterRoot, 'packages', 'flutter');
     if (!FileSystemEntity.isFileSync(path.join(flutterPackagePath, 'pubspec.yaml'))) {
-      print('Unable to find package:flutter in $flutterPackagePath');
+      printError('Unable to find package:flutter in $flutterPackagePath');
       return 2;
     }
 
@@ -50,7 +50,7 @@ class CreateCommand extends Command {
 
     new FlutterSimpleTemplate().generateInto(out, flutterPackagePath);
 
-    print('');
+    printStatus('');
 
     String message = '''All done! To run your application:
 
@@ -64,7 +64,7 @@ class CreateCommand extends Command {
         return code;
     }
 
-    print(message);
+    printStatus(message);
     return 0;
   }
 
@@ -80,13 +80,13 @@ class CreateCommand extends Command {
     if (!pubSpecYaml.existsSync()) {
       if (skipIfAbsent)
         return 0;
-      logging.severe('$directory: no pubspec.yaml found');
+      printError('$directory: no pubspec.yaml found');
       return 1;
     }
 
     if (!pubSpecLock.existsSync() || pubSpecYaml.lastModifiedSync().isAfter(pubSpecLock.lastModifiedSync())) {
       if (verbose)
-        print("Running pub get in $directory...");
+        printStatus("Running pub get in $directory...");
       int code = await runCommandAndStreamOutput(
         [sdkBinaryName('pub'), 'get'],
         workingDirectory: directory
@@ -99,7 +99,7 @@ class CreateCommand extends Command {
         (dotPackages.existsSync() && dotPackages.lastModifiedSync().isAfter(pubSpecYaml.lastModifiedSync())))
       return 0;
 
-    logging.severe('$directory: pubspec.yaml, pubspec.lock, and .packages are in an inconsistent state');
+    printError('$directory: pubspec.yaml, pubspec.lock, and .packages are in an inconsistent state');
     return 1;
   }
 }
@@ -115,7 +115,7 @@ abstract class Template {
   void generateInto(Directory dir, String flutterPackagePath) {
     String dirPath = path.normalize(dir.absolute.path);
     String projectName = _normalizeProjectName(path.basename(dirPath));
-    print('Creating ${path.basename(projectName)}...');
+    printStatus('Creating ${path.basename(projectName)}...');
     dir.createSync(recursive: true);
 
     String relativeFlutterPackagePath = path.relative(flutterPackagePath, from: dirPath);
@@ -131,7 +131,7 @@ abstract class Template {
       File file = new File(path.join(dir.path, filePath));
       file.parent.createSync();
       file.writeAsStringSync(contents);
-      print(file.path);
+      printStatus(file.path);
     });
   }
 
diff --git a/packages/flutter_tools/lib/src/commands/daemon.dart b/packages/flutter_tools/lib/src/commands/daemon.dart
index f03ca901a77..b8a3d94a1ba 100644
--- a/packages/flutter_tools/lib/src/commands/daemon.dart
+++ b/packages/flutter_tools/lib/src/commands/daemon.dart
@@ -6,11 +6,9 @@ import 'dart:async';
 import 'dart:convert';
 import 'dart:io';
 
-import 'package:logging/logging.dart';
-
 import '../android/adb.dart';
 import '../android/device_android.dart';
-import '../base/logging.dart';
+import '../base/context.dart';
 import '../device.dart';
 import '../runner/flutter_command.dart';
 import 'start.dart';
@@ -30,29 +28,32 @@ class DaemonCommand extends FlutterCommand {
 
   bool get requiresProjectRoot => false;
 
-  Future<int> runInProject() async {
-    print('Starting device daemon...');
+  Future<int> runInProject() {
+    printStatus('Starting device daemon...');
 
-    Stream<Map> commandStream = stdin
-      .transform(UTF8.decoder)
-      .transform(const LineSplitter())
-      .where((String line) => line.startsWith('[{') && line.endsWith('}]'))
-      .map((String line) {
-        line = line.substring(1, line.length - 1);
-        return JSON.decode(line);
-      });
+    NotifyingAppContext appContext = new NotifyingAppContext();
 
-    Daemon daemon = new Daemon(commandStream, (Map command) {
-      stdout.writeln('[${JSON.encode(command, toEncodable: _jsonEncodeObject)}]');
-    }, daemonCommand: this);
+    return runZoned(() {
+      Stream<Map<String, dynamic>> commandStream = stdin
+        .transform(UTF8.decoder)
+        .transform(const LineSplitter())
+        .where((String line) => line.startsWith('[{') && line.endsWith('}]'))
+        .map((String line) {
+          line = line.substring(1, line.length - 1);
+          return JSON.decode(line);
+        });
 
-    return await daemon.onExit;
+      Daemon daemon = new Daemon(commandStream, (Map command) {
+        stdout.writeln('[${JSON.encode(command, toEncodable: _jsonEncodeObject)}]');
+      }, daemonCommand: this, appContext: appContext);
+
+      return daemon.onExit;
+    }, zoneValues: {'context': appContext});
   }
 
   dynamic _jsonEncodeObject(dynamic object) {
     if (object is Device)
       return _deviceToMap(object);
-
     return object;
   }
 }
@@ -62,7 +63,10 @@ typedef void DispatchComand(Map<String, dynamic> command);
 typedef Future<dynamic> CommandHandler(dynamic args);
 
 class Daemon {
-  Daemon(Stream<Map> commandStream, this.sendCommand, {this.daemonCommand}) {
+  Daemon(Stream<Map> commandStream, this.sendCommand, {
+    this.daemonCommand,
+    this.appContext
+  }) {
     // Set up domains.
     _registerDomain(new DaemonDomain(this));
     _registerDomain(new AppDomain(this));
@@ -77,6 +81,7 @@ class Daemon {
 
   final DispatchComand sendCommand;
   final DaemonCommand daemonCommand;
+  final NotifyingAppContext appContext;
 
   final Completer<int> _onExitCompleter = new Completer<int>();
   final Map<String, Domain> _domainMap = <String, Domain>{};
@@ -94,7 +99,7 @@ class Daemon {
     dynamic id = request['id'];
 
     if (id == null) {
-      logging.severe('no id for request: $request');
+      stderr.writeln('no id for request: $request');
       return;
     }
 
@@ -111,7 +116,8 @@ class Daemon {
       _domainMap[prefix].handleCommand(name, id, request['params']);
     } catch (error, trace) {
       _send({'id': id, 'error': _toJsonable(error)});
-      logging.warning('error handling $request', error, trace);
+      stderr.writeln('error handling $request: $error');
+      stderr.writeln(trace);
     }
   }
 
@@ -152,7 +158,8 @@ abstract class Domain {
       }
     }).catchError((error, trace) {
       _send({'id': id, 'error': _toJsonable(error)});
-      logging.warning("error handling '$name.$command'", error, trace);
+      stderr.writeln("error handling '$name.$command': $error");
+      stderr.writeln(trace);
     });
   }
 
@@ -176,25 +183,23 @@ class DaemonDomain extends Domain {
     registerHandler('version', version);
     registerHandler('shutdown', shutdown);
 
-    _subscription = Logger.root.onRecord.listen((LogRecord record) {
-      String message = record.error == null ? record.message : '${record.message}: ${record.error}';
-
-      if (record.stackTrace != null) {
+    _subscription = daemon.appContext.onMessage.listen((LogMessage message) {
+      if (message.stackTrace != null) {
         sendEvent('daemon.logMessage', {
-          'level': record.level.name.toLowerCase(),
-          'message': message,
-          'stackTrace': record.stackTrace.toString()
+          'level': message.level,
+          'message': message.message,
+          'stackTrace': message.stackTrace.toString()
         });
       } else {
         sendEvent('daemon.logMessage', {
-          'level': record.level.name.toLowerCase(),
-          'message': message
+          'level': message.level,
+          'message': message.message
         });
       }
     });
   }
 
-  StreamSubscription<LogRecord> _subscription;
+  StreamSubscription<LogMessage> _subscription;
 
   Future<String> version(dynamic args) {
     return new Future.value(protocolVersion);
@@ -403,3 +408,31 @@ dynamic _toJsonable(dynamic obj) {
     return obj;
   return '$obj';
 }
+
+class NotifyingAppContext implements AppContext {
+  StreamController<LogMessage> _messageController = new StreamController<LogMessage>.broadcast();
+
+  Stream<LogMessage> get onMessage => _messageController.stream;
+
+  bool verbose = false;
+
+  void printError(String message, [StackTrace stackTrace]) {
+    _messageController.add(new LogMessage('error', message, stackTrace));
+  }
+
+  void printStatus(String message) {
+    _messageController.add(new LogMessage('status', message));
+  }
+
+  void printTrace(String message) {
+    _messageController.add(new LogMessage('trace', message));
+  }
+}
+
+class LogMessage {
+  final String level;
+  final String message;
+  final StackTrace stackTrace;
+
+  LogMessage(this.level, this.message, [this.stackTrace]);
+}
diff --git a/packages/flutter_tools/lib/src/commands/ios.dart b/packages/flutter_tools/lib/src/commands/ios.dart
index d3bea131ef3..3a9d7e74e33 100644
--- a/packages/flutter_tools/lib/src/commands/ios.dart
+++ b/packages/flutter_tools/lib/src/commands/ios.dart
@@ -8,7 +8,7 @@ import "dart:io";
 import "package:path/path.dart" as path;
 
 import "../artifacts.dart";
-import "../base/logging.dart";
+import "../base/context.dart";
 import "../base/process.dart";
 import "../runner/flutter_command.dart";
 import "../runner/flutter_command_runner.dart";
@@ -29,12 +29,12 @@ class IOSCommand extends FlutterCommand {
   }
 
   Future<List<int>> _fetchXcodeArchive() async {
-    print("Fetching the Xcode project archive from the cloud...");
+    printStatus("Fetching the Xcode project archive from the cloud...");
 
     HttpClient client = new HttpClient();
 
     Uri xcodeProjectUri = _xcodeProjectUri(ArtifactStore.engineRevision);
-    logging.info("Downloading $xcodeProjectUri...");
+    printStatus("Downloading $xcodeProjectUri...");
     HttpClientRequest request = await client.getUrl(xcodeProjectUri);
     HttpClientResponse response = await request.close();
 
@@ -49,7 +49,7 @@ class IOSCommand extends FlutterCommand {
   }
 
   Future<bool> _inflateXcodeArchive(String directory, List<int> archiveBytes) async {
-    print("Unzipping Xcode project to local directory...");
+    printStatus("Unzipping Xcode project to local directory...");
 
     // We cannot use ArchiveFile because this archive contains files that are exectuable
     // and there is currently no provision to modify file permissions during
@@ -117,16 +117,16 @@ class IOSCommand extends FlutterCommand {
     List<int> archiveBytes = await _fetchXcodeArchive();
 
     if (archiveBytes.isEmpty) {
-      print("Error: No archive bytes received.");
+      printError("Error: No archive bytes received.");
       return 1;
     }
 
     // Step 2: Inflate the archive into the user project directory
     bool result = await _inflateXcodeArchive(xcodeprojPath, archiveBytes);
     if (!result) {
-      print("Error: Could not init the Xcode project: the 'ios' directory already exists.");
-      print("To proceed, remove the 'ios' directory and try again.");
-      print("Warning: You may have made manual changes to files in the 'ios' directory.");
+      printError("Error: Could not init the Xcode project: the 'ios' directory already exists.");
+      printError("To proceed, remove the 'ios' directory and try again.");
+      printError("Warning: You may have made manual changes to files in the 'ios' directory.");
       return 1;
     }
 
@@ -134,22 +134,22 @@ class IOSCommand extends FlutterCommand {
     _setupXcodeProjXcconfig(path.join(xcodeprojPath, "Local.xcconfig"));
 
     // Step 4: Tell the user the location of the generated project.
-    print("An Xcode project has been placed in 'ios/'.");
-    print("You may edit it to modify iOS specific configuration.");
+    printStatus("An Xcode project has been placed in 'ios/'.");
+    printStatus("You may edit it to modify iOS specific configuration.");
     return 0;
   }
 
   @override
   Future<int> runInProject() async {
     if (!Platform.isMacOS) {
-      print("iOS specific commands may only be run on a Mac.");
+      printStatus("iOS specific commands may only be run on a Mac.");
       return 1;
     }
 
     if (argResults['init'])
       return await _runInitCommand();
 
-    print("No flags specified.");
+    printError("No flags specified.");
     return 1;
   }
 }
diff --git a/packages/flutter_tools/lib/src/commands/list.dart b/packages/flutter_tools/lib/src/commands/list.dart
index 4e6b92174b9..885ba15566a 100644
--- a/packages/flutter_tools/lib/src/commands/list.dart
+++ b/packages/flutter_tools/lib/src/commands/list.dart
@@ -4,6 +4,7 @@
 
 import 'dart:async';
 
+import '../base/context.dart';
 import '../device.dart';
 import '../runner/flutter_command.dart';
 
@@ -19,12 +20,13 @@ class ListCommand extends FlutterCommand {
     List<Device> devices = await deviceManager.getDevices();
 
     if (devices.isEmpty) {
-      print('No connected devices.');
+      printStatus('No connected devices.');
     } else {
-      print('${devices.length} connected ${pluralize('device', devices.length)}:');
-      print('');
+      printStatus('${devices.length} connected ${pluralize('device', devices.length)}:');
+      printStatus('');
+
       for (Device device in devices) {
-        print('${device.name} (${device.id})');
+        printStatus('${device.name} (${device.id})');
       }
     }
 
diff --git a/packages/flutter_tools/lib/src/commands/listen.dart b/packages/flutter_tools/lib/src/commands/listen.dart
index 3401a7d28f9..11219f40859 100644
--- a/packages/flutter_tools/lib/src/commands/listen.dart
+++ b/packages/flutter_tools/lib/src/commands/listen.dart
@@ -5,7 +5,7 @@
 import 'dart:async';
 import 'dart:io';
 
-import '../base/logging.dart';
+import '../base/context.dart';
 import '../base/process.dart';
 import 'start.dart';
 
@@ -36,7 +36,7 @@ class ListenCommand extends StartCommandBase {
     int result = 0;
     bool firstTime = true;
     do {
-      logging.info('Updating running Flutter apps...');
+      printStatus('Updating running Flutter apps...');
       result = await startApp(
         devices,
         applicationPackages,
@@ -58,7 +58,7 @@ class ListenCommand extends StartCommandBase {
       try {
         runCheckedSync(<String>['which', 'fswatch']);
       } catch (e) {
-        logging.severe('"listen" command is only useful if you have installed '
+        printError('"listen" command is only useful if you have installed '
             'fswatch on Mac.  Run "brew install fswatch" to install it with '
             'homebrew.');
         return null;
@@ -68,7 +68,7 @@ class ListenCommand extends StartCommandBase {
       try {
         runCheckedSync(<String>['which', 'inotifywait']);
       } catch (e) {
-        logging.severe('"listen" command is only useful if you have installed '
+        printError('"listen" command is only useful if you have installed '
             'inotifywait on Linux.  Run "apt-get install inotify-tools" or '
             'equivalent to install it.');
         return null;
@@ -82,18 +82,18 @@ class ListenCommand extends StartCommandBase {
         'modify,close_write,move,create,delete',
       ]..addAll(directories);
     } else {
-      logging.severe('"listen" command is only available on Mac and Linux.');
+      printError('"listen" command is only available on Mac and Linux.');
     }
     return null;
   }
 
   bool _watchDirectory(List<String> watchCommand) {
-    logging.info('Attempting to listen to these directories: ${watchCommand.join(", ")}');
+    printStatus('Attempting to listen to these directories: ${watchCommand.join(", ")}');
     assert(watchCommand != null);
     try {
       runCheckedSync(watchCommand);
     } catch (e) {
-      logging.warning('Watching directories failed.', e);
+      printError('Watching directories failed.', e);
       return false;
     }
     return true;
diff --git a/packages/flutter_tools/lib/src/commands/run_mojo.dart b/packages/flutter_tools/lib/src/commands/run_mojo.dart
index 24d2561674d..9acffbcb8f8 100644
--- a/packages/flutter_tools/lib/src/commands/run_mojo.dart
+++ b/packages/flutter_tools/lib/src/commands/run_mojo.dart
@@ -5,11 +5,10 @@
 import 'dart:async';
 import 'dart:io';
 
-import 'package:logging/logging.dart';
 import 'package:path/path.dart' as path;
 
 import '../artifacts.dart';
-import '../base/logging.dart';
+import '../base/context.dart';
 import '../base/process.dart';
 import '../build_configuration.dart';
 import '../flx.dart' as flx;
@@ -119,12 +118,8 @@ class RunMojoCommand extends FlutterCommand {
     if (useDevtools) {
       final String buildFlag = argResults['mojo-debug'] ? '--debug' : '--release';
       args.add(buildFlag);
-      if (logging.level <= Level.INFO) {
+      if (context.verbose)
         args.add('--verbose');
-        if (logging.level <= Level.FINE) {
-          args.add('--verbose');
-        }
-      }
     }
 
     if (argResults['checked']) {
@@ -132,19 +127,19 @@ class RunMojoCommand extends FlutterCommand {
     }
 
     args.addAll(argResults.rest);
-    print(args);
+    printStatus('$args');
     return args;
   }
 
   @override
   Future<int> runInProject() async {
     if ((argResults['mojo-path'] == null && argResults['devtools-path'] == null) || (argResults['mojo-path'] != null && argResults['devtools-path'] != null)) {
-      logging.severe('Must specify either --mojo-path or --devtools-path.');
+      printError('Must specify either --mojo-path or --devtools-path.');
       return 1;
     }
 
     if (argResults['mojo-debug'] && argResults['mojo-release']) {
-      logging.severe('Cannot specify both --mojo-debug and --mojo-release');
+      printError('Cannot specify both --mojo-debug and --mojo-release');
       return 1;
     }
 
diff --git a/packages/flutter_tools/lib/src/commands/start.dart b/packages/flutter_tools/lib/src/commands/start.dart
index 2983ed40e86..591e49d7a91 100644
--- a/packages/flutter_tools/lib/src/commands/start.dart
+++ b/packages/flutter_tools/lib/src/commands/start.dart
@@ -8,7 +8,7 @@ import 'dart:io';
 import 'package:path/path.dart' as path;
 
 import '../application_package.dart';
-import '../base/logging.dart';
+import '../base/context.dart';
 import '../device.dart';
 import '../runner/flutter_command.dart';
 import '../toolchain.dart';
@@ -64,7 +64,7 @@ class StartCommand extends StartCommandBase {
 
   @override
   Future<int> runInProject() async {
-    logging.fine('Downloading toolchain.');
+    printTrace('Downloading toolchain.');
 
     await Future.wait([
       downloadToolchain(),
@@ -89,7 +89,7 @@ class StartCommand extends StartCommandBase {
       clearLogs: clearLogs
     );
 
-    logging.fine('Finished start command.');
+    printTrace('Finished start command.');
     return result;
   }
 }
@@ -113,17 +113,17 @@ Future<int> startApp(
     String message = 'Tried to run $mainPath, but that file does not exist.';
     if (target == null)
       message += '\nConsider using the -t option to specify the Dart file to start.';
-    logging.severe(message);
+    printError(message);
     return 1;
   }
 
   if (stop) {
-    logging.fine('Running stop command.');
+    printTrace('Running stop command.');
     stopAll(devices, applicationPackages);
   }
 
   if (install) {
-    logging.fine('Running install command.');
+    printTrace('Running install command.');
     installApp(devices, applicationPackages);
   }
 
@@ -134,7 +134,7 @@ Future<int> startApp(
     if (package == null || !device.isConnected())
       continue;
 
-    logging.fine('Running build command for $device.');
+    printTrace('Running build command for $device.');
 
     Map<String, dynamic> platformArgs = <String, dynamic>{};
 
@@ -155,7 +155,7 @@ Future<int> startApp(
     );
 
     if (!result) {
-      logging.severe('Could not start \'${package.name}\' on \'${device.id}\'');
+      printError('Could not start \'${package.name}\' on \'${device.id}\'');
     } else {
       startedSomething = true;
     }
@@ -163,9 +163,9 @@ Future<int> startApp(
 
   if (!startedSomething) {
     if (!devices.all.any((device) => device.isConnected())) {
-      logging.severe('Unable to run application - no connected devices.');
+      printError('Unable to run application - no connected devices.');
     } else {
-      logging.severe('Unable to run application.');
+      printError('Unable to run application.');
     }
   }
 
diff --git a/packages/flutter_tools/lib/src/commands/test.dart b/packages/flutter_tools/lib/src/commands/test.dart
index d06797d316f..893d9cdbe16 100644
--- a/packages/flutter_tools/lib/src/commands/test.dart
+++ b/packages/flutter_tools/lib/src/commands/test.dart
@@ -9,7 +9,7 @@ import 'package:path/path.dart' as path;
 import 'package:test/src/executable.dart' as executable;
 
 import '../artifacts.dart';
-import '../base/logging.dart';
+import '../base/context.dart';
 import '../build_configuration.dart';
 import '../runner/flutter_command.dart';
 import '../test/loader.dart' as loader;
@@ -105,7 +105,7 @@ class TestCommand extends FlutterCommand {
       foundOne = true;
       loader.shellPath = path.absolute(await _getShellPath(config));
       if (!FileSystemEntity.isFileSync(loader.shellPath)) {
-          logging.severe('Cannot find Flutter shell at ${loader.shellPath}');
+          printError('Cannot find Flutter shell at ${loader.shellPath}');
         return 1;
       }
       await _runTests(testArgs, testDir);
@@ -113,7 +113,7 @@ class TestCommand extends FlutterCommand {
         return exitCode;
     }
     if (!foundOne) {
-      stderr.writeln('At least one of --debug or --release must be set, to specify the local build products to test.');
+      printError('At least one of --debug or --release must be set, to specify the local build products to test.');
       return 1;
     }
 
diff --git a/packages/flutter_tools/lib/src/commands/trace.dart b/packages/flutter_tools/lib/src/commands/trace.dart
index f2195f01e6c..f4b64a6c587 100644
--- a/packages/flutter_tools/lib/src/commands/trace.dart
+++ b/packages/flutter_tools/lib/src/commands/trace.dart
@@ -6,7 +6,7 @@ import 'dart:async';
 
 import '../android/device_android.dart';
 import '../application_package.dart';
-import '../base/logging.dart';
+import '../base/context.dart';
 import '../runner/flutter_command.dart';
 
 class TraceCommand extends FlutterCommand {
@@ -30,7 +30,7 @@ class TraceCommand extends FlutterCommand {
     await downloadApplicationPackagesAndConnectToDevices();
 
     if (!devices.android.isConnected()) {
-      logging.warning('No device connected, so no trace was completed.');
+      printError('No device connected, so no trace was completed.');
       return 1;
     }
 
@@ -56,9 +56,9 @@ class TraceCommand extends FlutterCommand {
   Future _stopTracing(AndroidDevice android, AndroidApk androidApp) async {
     String tracePath = await android.stopTracing(androidApp, outPath: argResults['out']);
     if (tracePath == null) {
-      logging.warning('No trace file saved.');
+      printError('No trace file saved.');
     } else {
-      print('Trace file saved to $tracePath');
+      printStatus('Trace file saved to $tracePath');
     }
   }
 }
diff --git a/packages/flutter_tools/lib/src/commands/upgrade.dart b/packages/flutter_tools/lib/src/commands/upgrade.dart
index 3258edf31ba..c97bd45f434 100644
--- a/packages/flutter_tools/lib/src/commands/upgrade.dart
+++ b/packages/flutter_tools/lib/src/commands/upgrade.dart
@@ -5,6 +5,7 @@
 import 'dart:async';
 
 import '../artifacts.dart';
+import '../base/context.dart';
 import '../base/process.dart';
 import '../runner/flutter_command.dart';
 
@@ -19,7 +20,7 @@ class UpgradeCommand extends FlutterCommand {
         'git', 'rev-parse', '@{u}'
       ], workingDirectory: ArtifactStore.flutterRoot);
     } catch (e) {
-      print('Unable to upgrade Flutter. No upstream repository configured for Flutter.');
+      printError('Unable to upgrade Flutter. No upstream repository configured for Flutter.');
       return 1;
     }
 
diff --git a/packages/flutter_tools/lib/src/device.dart b/packages/flutter_tools/lib/src/device.dart
index 2012525e5a8..93045534404 100644
--- a/packages/flutter_tools/lib/src/device.dart
+++ b/packages/flutter_tools/lib/src/device.dart
@@ -6,7 +6,7 @@ import 'dart:async';
 
 import 'android/device_android.dart';
 import 'application_package.dart';
-import 'base/logging.dart';
+import 'base/context.dart';
 import 'build_configuration.dart';
 import 'ios/device_ios.dart';
 import 'toolchain.dart';
@@ -132,7 +132,7 @@ class DeviceStore {
           (Device dev) => (dev.id == config.deviceId),
           orElse: () => null);
       if (device == null) {
-        logging.severe('Warning: Device ID ${config.deviceId} not found');
+        printError('Warning: Device ID ${config.deviceId} not found');
       }
     } else if (devices.length == 1) {
       // Step 2: If no identifier is specified and there is only one connected
@@ -140,8 +140,8 @@ class DeviceStore {
       device = devices[0];
     } else if (devices.length > 1) {
       // Step 3: D:
-      logging.fine('Multiple devices are connected, but no device ID was specified.');
-      logging.fine('Attempting to launch on all connected devices.');
+      printTrace('Multiple devices are connected, but no device ID was specified.');
+      printTrace('Attempting to launch on all connected devices.');
     }
 
     return device;
diff --git a/packages/flutter_tools/lib/src/flx.dart b/packages/flutter_tools/lib/src/flx.dart
index b7daa5f2bd7..a6ed6b93a06 100644
--- a/packages/flutter_tools/lib/src/flx.dart
+++ b/packages/flutter_tools/lib/src/flx.dart
@@ -12,8 +12,8 @@ import 'package:flx/signing.dart';
 import 'package:path/path.dart' as path;
 import 'package:yaml/yaml.dart';
 
+import 'base/context.dart';
 import 'base/file_system.dart';
-import 'base/logging.dart';
 import 'toolchain.dart';
 
 const String defaultMainPath = 'lib/main.dart';
@@ -158,7 +158,7 @@ Future<int> build(
   String privateKeyPath: defaultPrivateKeyPath,
   bool precompiledSnapshot: false
 }) async {
-  logging.fine('Building $outputPath');
+  printTrace('Building $outputPath');
 
   Map manifestDescriptor = _loadManifest(manifestPath);
 
@@ -174,7 +174,7 @@ Future<int> build(
     // content equivalents
     int result = await toolchain.compiler.compile(mainPath: mainPath, snapshotPath: snapshotPath);
     if (result != 0) {
-      logging.severe('Failed to run the Flutter compiler. Exit code: $result');
+      printError('Failed to run the Flutter compiler. Exit code: $result');
       return result;
     }
 
@@ -184,7 +184,7 @@ Future<int> build(
   for (_Asset asset in assets) {
     ArchiveFile file = _createFile(asset.key, asset.base);
     if (file == null) {
-      stderr.writeln('Cannot find asset "${asset.key}" in directory "${path.absolute(asset.base)}".');
+      printError('Cannot find asset "${asset.key}" in directory "${path.absolute(asset.base)}".');
       return 1;
     }
     archive.addFile(file);
diff --git a/packages/flutter_tools/lib/src/ios/device_ios.dart b/packages/flutter_tools/lib/src/ios/device_ios.dart
index b7929965aa6..5a2d2a030ae 100644
--- a/packages/flutter_tools/lib/src/ios/device_ios.dart
+++ b/packages/flutter_tools/lib/src/ios/device_ios.dart
@@ -8,7 +8,7 @@ import 'dart:io';
 import 'package:path/path.dart' as path;
 
 import '../application_package.dart';
-import '../base/logging.dart';
+import '../base/context.dart';
 import '../base/process.dart';
 import '../build_configuration.dart';
 import '../device.dart';
@@ -129,9 +129,9 @@ class IOSDevice extends Device {
         command = runCheckedSync(['which', command]).trim();
       } catch (e) {
         if (Platform.isMacOS) {
-          logging.severe('$command not found. $macInstructions');
+          printError('$command not found. $macInstructions');
         } else {
-          logging.severe('Cannot control iOS devices or simulators.  $command is not available on your platform.');
+          printError('Cannot control iOS devices or simulators.  $command is not available on your platform.');
         }
       }
       return command;
@@ -187,13 +187,13 @@ class IOSDevice extends Device {
     Map<String, dynamic> platformArgs
   }) async {
     // TODO: Use checked, mainPath, route
-    logging.fine('Building ${app.name} for $id');
+    printTrace('Building ${app.name} for $id');
 
     // Step 1: Install the precompiled application if necessary
     bool buildResult = await _buildIOSXcodeProject(app, true);
 
     if (!buildResult) {
-      logging.severe('Could not build the precompiled application for the device');
+      printError('Could not build the precompiled application for the device');
       return false;
     }
 
@@ -202,7 +202,7 @@ class IOSDevice extends Device {
 
     bool bundleExists = bundle.existsSync();
     if (!bundleExists) {
-      logging.severe('Could not find the built application bundle at ${bundle.path}');
+      printError('Could not find the built application bundle at ${bundle.path}');
       return false;
     }
 
@@ -217,11 +217,11 @@ class IOSDevice extends Device {
     ]);
 
     if (installationResult != 0) {
-      logging.severe('Could not install ${bundle.path} on $id');
+      printError('Could not install ${bundle.path} on $id');
       return false;
     }
 
-    logging.fine('Installation successful');
+    printTrace('Installation successful');
     return true;
   }
 
@@ -311,13 +311,13 @@ class IOSSimulator extends Device {
       // More than one simulator is listed as booted, which is not allowed but
       // sometimes happens erroneously.  Kill them all because we don't know
       // which one is actually running.
-      logging.warning('Multiple running simulators were detected, '
+      printError('Multiple running simulators were detected, '
           'which is not supposed to happen.');
       for (Match match in matches) {
         if (match.groupCount > 0) {
           // TODO: We're killing simulator devices inside an accessor method;
           // we probably shouldn't be changing state here.
-          logging.warning('Killing simulator ${match.group(1)}');
+          printError('Killing simulator ${match.group(1)}');
           runSync([xcrunPath, 'simctl', 'shutdown', match.group(2)]);
         }
       }
@@ -328,7 +328,7 @@ class IOSSimulator extends Device {
     if (match != null && match.groupCount > 0) {
       return new _IOSSimulatorInfo(match.group(2), match.group(1));
     } else {
-      logging.info('No running simulators found');
+      printTrace('No running simulators found');
       return null;
     }
   }
@@ -368,11 +368,11 @@ class IOSSimulator extends Device {
       runDetached([iOSSimPath]);
       Future<bool> checkConnection([int attempts = 20]) async {
         if (attempts == 0) {
-          logging.info('Timed out waiting for iOS Simulator $id to boot.');
+          printStatus('Timed out waiting for iOS Simulator $id to boot.');
           return false;
         }
         if (!isConnected()) {
-          logging.info('Waiting for iOS Simulator $id to boot...');
+          printStatus('Waiting for iOS Simulator $id to boot...');
           return await new Future.delayed(new Duration(milliseconds: 500),
               () => checkConnection(attempts - 1));
         }
@@ -383,7 +383,7 @@ class IOSSimulator extends Device {
       try {
         runCheckedSync([xcrunPath, 'simctl', 'boot', id]);
       } catch (e) {
-        logging.warning('Unable to boot iOS Simulator $id: ', e);
+        printError('Unable to boot iOS Simulator $id: ', e);
         return false;
       }
     }
@@ -441,12 +441,12 @@ class IOSSimulator extends Device {
     Map<String, dynamic> platformArgs
   }) async {
     // TODO: Use checked, mainPath, route
-    logging.fine('Building ${app.name} for $id');
+    printTrace('Building ${app.name} for $id');
 
     // Step 1: Build the Xcode project
     bool buildResult = await _buildIOSXcodeProject(app, false);
     if (!buildResult) {
-      logging.severe('Could not build the application for the simulator');
+      printError('Could not build the application for the simulator');
       return false;
     }
 
@@ -454,7 +454,7 @@ class IOSSimulator extends Device {
     Directory bundle = new Directory(path.join(app.localPath, 'build', 'Release-iphonesimulator', 'Runner.app'));
     bool bundleExists = await bundle.exists();
     if (!bundleExists) {
-      logging.severe('Could not find the built application bundle at ${bundle.path}');
+      printError('Could not find the built application bundle at ${bundle.path}');
       return false;
     }
 
@@ -468,7 +468,7 @@ class IOSSimulator extends Device {
     ]);
 
     if (installResult != 0) {
-      logging.severe('Could not install the application bundle on the simulator');
+      printError('Could not install the application bundle on the simulator');
       return false;
     }
 
@@ -482,11 +482,11 @@ class IOSSimulator extends Device {
     ]);
 
     if (launchResult != 0) {
-      logging.severe('Could not launch the freshly installed application on the simulator');
+      printError('Could not launch the freshly installed application on the simulator');
       return false;
     }
 
-    logging.fine('Successfully started ${app.name} on $id');
+    printTrace('Successfully started ${app.name} on $id');
     return true;
   }
 
@@ -545,11 +545,11 @@ bool _checkXcodeVersion() {
     String version = runCheckedSync(['xcodebuild', '-version']);
     Match match = _xcodeVersionRegExp.firstMatch(version);
     if (int.parse(match[1]) < 7) {
-      logging.severe('Found "${match[0]}". $_xcodeRequirement');
+      printError('Found "${match[0]}". $_xcodeRequirement');
       return false;
     }
   } catch (e) {
-    logging.severe('Cannot find "xcodebuid". $_xcodeRequirement');
+    printError('Cannot find "xcodebuid". $_xcodeRequirement');
     return false;
   }
   return true;
@@ -557,7 +557,7 @@ bool _checkXcodeVersion() {
 
 Future<bool> _buildIOSXcodeProject(ApplicationPackage app, bool isDevice) async {
   if (!FileSystemEntity.isDirectorySync(app.localPath)) {
-    logging.severe('Path "${path.absolute(app.localPath)}" does not exist.\nDid you run `flutter ios --init`?');
+    printError('Path "${path.absolute(app.localPath)}" does not exist.\nDid you run `flutter ios --init`?');
     return false;
   }
 
diff --git a/packages/flutter_tools/lib/src/runner/flutter_command.dart b/packages/flutter_tools/lib/src/runner/flutter_command.dart
index b6eee333c20..5cab91da86c 100644
--- a/packages/flutter_tools/lib/src/runner/flutter_command.dart
+++ b/packages/flutter_tools/lib/src/runner/flutter_command.dart
@@ -8,6 +8,7 @@ import 'dart:io';
 import 'package:args/command_runner.dart';
 
 import '../application_package.dart';
+import '../base/context.dart';
 import '../build_configuration.dart';
 import '../device.dart';
 import '../toolchain.dart';
@@ -55,7 +56,7 @@ abstract class FlutterCommand extends Command {
 
   bool validateProjectRoot() {
     if (!FileSystemEntity.isFileSync('pubspec.yaml')) {
-      stderr.writeln(projectRootValidationErrorMessage);
+      printError(projectRootValidationErrorMessage);
       return false;
     }
     return true;
diff --git a/packages/flutter_tools/lib/src/runner/flutter_command_runner.dart b/packages/flutter_tools/lib/src/runner/flutter_command_runner.dart
index e6e7a8787f3..916e5761ea9 100644
--- a/packages/flutter_tools/lib/src/runner/flutter_command_runner.dart
+++ b/packages/flutter_tools/lib/src/runner/flutter_command_runner.dart
@@ -7,11 +7,10 @@ import 'dart:io';
 
 import 'package:args/args.dart';
 import 'package:args/command_runner.dart';
-import 'package:logging/logging.dart';
 import 'package:path/path.dart' as path;
 
 import '../artifacts.dart';
-import '../base/logging.dart';
+import '../base/context.dart';
 import '../base/process.dart';
 import '../build_configuration.dart';
 import 'version.dart';
@@ -29,10 +28,6 @@ class FlutterCommandRunner extends CommandRunner {
         abbr: 'v',
         negatable: false,
         help: 'Noisy logging, including all shell commands executed.');
-    argParser.addFlag('very-verbose',
-        negatable: false,
-        help: 'Very noisy logging, including the output of all '
-            'shell commands executed.');
     argParser.addFlag('version',
         negatable: false,
         help: 'Reports the version of this tool.');
@@ -141,10 +136,7 @@ class FlutterCommandRunner extends CommandRunner {
 
   Future<int> runCommand(ArgResults globalResults) {
     if (globalResults['verbose'])
-      Logger.root.level = Level.INFO;
-
-    if (globalResults['very-verbose'])
-      Logger.root.level = Level.FINE;
+      context.verbose = true;
 
     _globalResults = globalResults;
     ArtifactStore.flutterRoot = path.normalize(path.absolute(globalResults['flutter-root']));
@@ -152,7 +144,7 @@ class FlutterCommandRunner extends CommandRunner {
       ArtifactStore.packageRoot = path.normalize(path.absolute(globalResults['package-root']));
 
     if (globalResults['version']) {
-      print(getVersion(ArtifactStore.flutterRoot));
+      printStatus(getVersion(ArtifactStore.flutterRoot));
       return new Future<int>.value(0);
     }
 
@@ -186,7 +178,7 @@ class FlutterCommandRunner extends CommandRunner {
         engineSourcePath = _tryEnginePath(path.join(ArtifactStore.flutterRoot, '../engine/src'));
 
       if (engineSourcePath == null) {
-        stderr.writeln('Unable to detect local Flutter engine build directory.\n'
+        printError('Unable to detect local Flutter engine build directory.\n'
             'Either specify a dependency_override for the $kFlutterEnginePackageName package in your pubspec.yaml and\n'
             'ensure --package-root is set if necessary, or set the \$$kFlutterEngineEnvironmentVariableName environment variable, or\n'
             'use --engine-src-path to specify the path to the root of your flutter/engine repository.');
@@ -195,7 +187,7 @@ class FlutterCommandRunner extends CommandRunner {
     }
 
     if (engineSourcePath != null && _tryEnginePath(engineSourcePath) == null) {
-      stderr.writeln('Unable to detect a Flutter engine build directory in $engineSourcePath.\n'
+      printError('Unable to detect a Flutter engine build directory in $engineSourcePath.\n'
           'Please ensure that $engineSourcePath is a Flutter engine \'src\' directory and that\n'
           'you have compiled the engine in that directory, which should produce an \'out\' directory');
       throw new ProcessExit(2);
@@ -240,7 +232,7 @@ class FlutterCommandRunner extends CommandRunner {
       }
     } else {
       if (!FileSystemEntity.isDirectorySync(enginePath))
-        logging.warning('$enginePath is not a valid directory');
+        printError('$enginePath is not a valid directory');
 
       if (!isDebug && !isRelease)
         isDebug = true;
diff --git a/packages/flutter_tools/lib/src/test/loader.dart b/packages/flutter_tools/lib/src/test/loader.dart
index 1da21ba888a..ca90c2fcad6 100644
--- a/packages/flutter_tools/lib/src/test/loader.dart
+++ b/packages/flutter_tools/lib/src/test/loader.dart
@@ -7,8 +7,6 @@ import 'dart:convert';
 import 'dart:io';
 
 import 'package:path/path.dart' as path;
-import 'package:flutter_tools/src/test/json_socket.dart';
-import 'package:flutter_tools/src/test/remote_test.dart';
 import 'package:stack_trace/stack_trace.dart';
 import 'package:test/src/backend/group.dart';
 import 'package:test/src/backend/metadata.dart';
@@ -21,6 +19,9 @@ import 'package:test/src/runner/vm/environment.dart';
 import 'package:test/src/util/io.dart';
 import 'package:test/src/util/remote_exception.dart';
 
+import 'json_socket.dart';
+import 'remote_test.dart';
+
 void installHook() {
   hack.loadVMFileHook = _loadVMFile;
 }
diff --git a/packages/flutter_tools/lib/src/test/remote_listener.dart b/packages/flutter_tools/lib/src/test/remote_listener.dart
index 502ebf38751..d3a3f992f81 100644
--- a/packages/flutter_tools/lib/src/test/remote_listener.dart
+++ b/packages/flutter_tools/lib/src/test/remote_listener.dart
@@ -14,8 +14,8 @@ import 'package:test/src/backend/live_test.dart';
 import 'package:test/src/backend/metadata.dart';
 import 'package:test/src/backend/operating_system.dart';
 import 'package:test/src/backend/suite.dart';
-import 'package:test/src/backend/test_platform.dart';
 import 'package:test/src/backend/test.dart';
+import 'package:test/src/backend/test_platform.dart';
 import 'package:test/src/util/remote_exception.dart';
 
 final OperatingSystem currentOS = (() {
diff --git a/packages/flutter_tools/lib/src/test/remote_test.dart b/packages/flutter_tools/lib/src/test/remote_test.dart
index 0087b202dfc..5a34fc5f882 100644
--- a/packages/flutter_tools/lib/src/test/remote_test.dart
+++ b/packages/flutter_tools/lib/src/test/remote_test.dart
@@ -5,18 +5,18 @@
 import 'dart:async';
 
 import 'package:stack_trace/stack_trace.dart';
+import 'package:test/src/backend/group.dart';
 import 'package:test/src/backend/live_test.dart';
 import 'package:test/src/backend/live_test_controller.dart';
 import 'package:test/src/backend/metadata.dart';
 import 'package:test/src/backend/operating_system.dart';
-import 'package:test/src/backend/group.dart';
 import 'package:test/src/backend/state.dart';
 import 'package:test/src/backend/suite.dart';
 import 'package:test/src/backend/test.dart';
 import 'package:test/src/backend/test_platform.dart';
 import 'package:test/src/util/remote_exception.dart';
 
-import 'package:flutter_tools/src/test/json_socket.dart';
+import 'json_socket.dart';
 
 class RemoteTest extends Test {
   RemoteTest(this.name, this.metadata, this._socket, this._index);
diff --git a/packages/flutter_tools/test/context_test.dart b/packages/flutter_tools/test/context_test.dart
new file mode 100644
index 00000000000..c7d81e29965
--- /dev/null
+++ b/packages/flutter_tools/test/context_test.dart
@@ -0,0 +1,66 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+import 'dart:async';
+
+import 'package:flutter_tools/src/base/context.dart';
+import 'package:test/test.dart';
+
+main() => defineTests();
+
+defineTests() {
+  group('DeviceManager', () {
+    test('error', () async {
+      MockContext mockContext = new MockContext();
+
+      runZoned(() {
+        printError('foo bar');
+      }, zoneValues: {'context': mockContext});
+
+      expect(mockContext.errorText, 'foo bar\n');
+      expect(mockContext.statusText, '');
+      expect(mockContext.traceText, '');
+    });
+
+    test('status', () async {
+      MockContext mockContext = new MockContext();
+
+      runZoned(() {
+        printStatus('foo bar');
+      }, zoneValues: {'context': mockContext});
+
+      expect(mockContext.errorText, '');
+      expect(mockContext.statusText, 'foo bar\n');
+      expect(mockContext.traceText, '');
+    });
+
+    test('trace', () async {
+      MockContext mockContext = new MockContext();
+
+      runZoned(() {
+        printTrace('foo bar');
+      }, zoneValues: {'context': mockContext});
+
+      expect(mockContext.errorText, '');
+      expect(mockContext.statusText, '');
+      expect(mockContext.traceText, 'foo bar\n');
+    });
+  });
+}
+
+class MockContext implements AppContext {
+  bool verbose = false;
+
+  StringBuffer _error = new StringBuffer();
+  StringBuffer _status = new StringBuffer();
+  StringBuffer _trace = new StringBuffer();
+
+  String get errorText => _error.toString();
+  String get statusText => _status.toString();
+  String get traceText => _trace.toString();
+
+  void printError(String message, [StackTrace stackTrace]) => _error.writeln(message);
+  void printStatus(String message) => _status.writeln(message);
+  void printTrace(String message) => _trace.writeln(message);
+}
diff --git a/packages/flutter_tools/test/create_test.dart b/packages/flutter_tools/test/create_test.dart
index aabcc407015..310db359821 100644
--- a/packages/flutter_tools/test/create_test.dart
+++ b/packages/flutter_tools/test/create_test.dart
@@ -5,10 +5,10 @@
 import 'dart:io';
 
 import 'package:args/command_runner.dart';
-import 'package:path/path.dart' as path;
 import 'package:flutter_tools/src/artifacts.dart';
-import 'package:flutter_tools/src/commands/create.dart';
 import 'package:flutter_tools/src/base/process.dart';
+import 'package:flutter_tools/src/commands/create.dart';
+import 'package:path/path.dart' as path;
 import 'package:test/test.dart';
 
 main() => defineTests();
diff --git a/packages/flutter_tools/test/daemon_test.dart b/packages/flutter_tools/test/daemon_test.dart
index 7cfa8c62989..d7a771fe172 100644
--- a/packages/flutter_tools/test/daemon_test.dart
+++ b/packages/flutter_tools/test/daemon_test.dart
@@ -4,7 +4,7 @@
 
 import 'dart:async';
 
-import 'package:flutter_tools/src/base/logging.dart';
+import 'package:flutter_tools/src/base/context.dart';
 import 'package:flutter_tools/src/commands/daemon.dart';
 import 'package:mockito/mockito.dart';
 import 'package:test/test.dart';
@@ -16,6 +16,11 @@ main() => defineTests();
 defineTests() {
   group('daemon', () {
     Daemon daemon;
+    NotifyingAppContext appContext;
+
+    setUp(() {
+      appContext = new NotifyingAppContext();
+    });
 
     tearDown(() {
       if (daemon != null)
@@ -23,11 +28,12 @@ defineTests() {
     });
 
     test('daemon.version', () async {
-      StreamController<Map> commands = new StreamController();
-      StreamController<Map> responses = new StreamController();
+      StreamController<Map<String, dynamic>> commands = new StreamController();
+      StreamController<Map<String, dynamic>> responses = new StreamController();
       daemon = new Daemon(
         commands.stream,
-        (Map<String, dynamic> result) => responses.add(result)
+        (Map<String, dynamic> result) => responses.add(result),
+        appContext: appContext
       );
       commands.add({'id': 0, 'method': 'daemon.version'});
       Map response = await responses.stream.where(_notEvent).first;
@@ -36,30 +42,34 @@ defineTests() {
       expect(response['result'] is String, true);
     });
 
-    test('daemon.logMessage', () async {
-      StreamController<Map> commands = new StreamController();
-      StreamController<Map> responses = new StreamController();
-      daemon = new Daemon(
-        commands.stream,
-        (Map<String, dynamic> result) => responses.add(result)
-      );
-      logging.warning('daemon.logMessage test');
-      Map response = await responses.stream.where((Map<String, dynamic> map) {
-        return map['event'] == 'daemon.logMessage' && map['params']['level'] == 'warning';
-      }).first;
-      expect(response['id'], isNull);
-      expect(response['event'], 'daemon.logMessage');
-      Map<String, String> logMessage = response['params'];
-      expect(logMessage['level'], 'warning');
-      expect(logMessage['message'], 'daemon.logMessage test');
+    test('daemon.logMessage', () {
+      return runZoned(() async {
+        StreamController<Map<String, dynamic>> commands = new StreamController();
+        StreamController<Map<String, dynamic>> responses = new StreamController();
+        daemon = new Daemon(
+          commands.stream,
+          (Map<String, dynamic> result) => responses.add(result),
+          appContext: appContext
+        );
+        printError('daemon.logMessage test');
+        Map<String, dynamic> response = await responses.stream.where((Map<String, dynamic> map) {
+          return map['event'] == 'daemon.logMessage' && map['params']['level'] == 'error';
+        }).first;
+        expect(response['id'], isNull);
+        expect(response['event'], 'daemon.logMessage');
+        Map<String, String> logMessage = response['params'];
+        expect(logMessage['level'], 'error');
+        expect(logMessage['message'], 'daemon.logMessage test');
+      }, zoneValues: {'context': appContext});
     });
 
     test('daemon.shutdown', () async {
-      StreamController<Map> commands = new StreamController();
-      StreamController<Map> responses = new StreamController();
+      StreamController<Map<String, dynamic>> commands = new StreamController();
+      StreamController<Map<String, dynamic>> responses = new StreamController();
       daemon = new Daemon(
         commands.stream,
-        (Map<String, dynamic> result) => responses.add(result)
+        (Map<String, dynamic> result) => responses.add(result),
+        appContext: appContext
       );
       commands.add({'id': 0, 'method': 'daemon.shutdown'});
       return daemon.onExit.then((int code) {
@@ -71,12 +81,13 @@ defineTests() {
       DaemonCommand command = new DaemonCommand();
       applyMocksToCommand(command);
 
-      StreamController<Map> commands = new StreamController();
-      StreamController<Map> responses = new StreamController();
+      StreamController<Map<String, dynamic>> commands = new StreamController();
+      StreamController<Map<String, dynamic>> responses = new StreamController();
       daemon = new Daemon(
         commands.stream,
         (Map<String, dynamic> result) => responses.add(result),
-        daemonCommand: command
+        daemonCommand: command,
+        appContext: appContext
       );
 
       MockDeviceStore mockDevices = command.devices;
@@ -97,11 +108,12 @@ defineTests() {
     });
 
     test('device.getDevices', () async {
-      StreamController<Map> commands = new StreamController();
-      StreamController<Map> responses = new StreamController();
+      StreamController<Map<String, dynamic>> commands = new StreamController();
+      StreamController<Map<String, dynamic>> responses = new StreamController();
       daemon = new Daemon(
         commands.stream,
-        (Map<String, dynamic> result) => responses.add(result)
+        (Map<String, dynamic> result) => responses.add(result),
+        appContext: appContext
       );
       commands.add({'id': 0, 'method': 'device.getDevices'});
       Map response = await responses.stream.where(_notEvent).first;
diff --git a/packages/flutter_tools/test/device_test.dart b/packages/flutter_tools/test/device_test.dart
index ce4be06ec1f..62903bd7ba6 100644
--- a/packages/flutter_tools/test/device_test.dart
+++ b/packages/flutter_tools/test/device_test.dart
@@ -1,4 +1,4 @@
-// Copyright 2015 The Chromium Authors. All rights reserved.
+// Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
diff --git a/packages/flutter_tools/test/install_test.dart b/packages/flutter_tools/test/install_test.dart
index 64fce892638..c5c87765640 100644
--- a/packages/flutter_tools/test/install_test.dart
+++ b/packages/flutter_tools/test/install_test.dart
@@ -3,8 +3,8 @@
 // found in the LICENSE file.
 
 import 'package:args/command_runner.dart';
-import 'package:mockito/mockito.dart';
 import 'package:flutter_tools/src/commands/install.dart';
+import 'package:mockito/mockito.dart';
 import 'package:test/test.dart';
 
 import 'src/mocks.dart';
diff --git a/packages/flutter_tools/test/list_test.dart b/packages/flutter_tools/test/list_test.dart
index 68b8cf72ed4..91c05b773a7 100644
--- a/packages/flutter_tools/test/list_test.dart
+++ b/packages/flutter_tools/test/list_test.dart
@@ -5,8 +5,8 @@
 import 'dart:io';
 
 import 'package:args/command_runner.dart';
-import 'package:mockito/mockito.dart';
 import 'package:flutter_tools/src/commands/list.dart';
+import 'package:mockito/mockito.dart';
 import 'package:test/test.dart';
 
 import 'src/mocks.dart';
diff --git a/packages/flutter_tools/test/listen_test.dart b/packages/flutter_tools/test/listen_test.dart
index 6f56177482d..898c585dc78 100644
--- a/packages/flutter_tools/test/listen_test.dart
+++ b/packages/flutter_tools/test/listen_test.dart
@@ -3,8 +3,8 @@
 // found in the LICENSE file.
 
 import 'package:args/command_runner.dart';
-import 'package:mockito/mockito.dart';
 import 'package:flutter_tools/src/commands/listen.dart';
+import 'package:mockito/mockito.dart';
 import 'package:test/test.dart';
 
 import 'src/mocks.dart';
diff --git a/packages/flutter_tools/test/logs_test.dart b/packages/flutter_tools/test/logs_test.dart
index a38a25b1454..a7736a6eaf5 100644
--- a/packages/flutter_tools/test/logs_test.dart
+++ b/packages/flutter_tools/test/logs_test.dart
@@ -3,8 +3,8 @@
 // found in the LICENSE file.
 
 import 'package:args/command_runner.dart';
-import 'package:mockito/mockito.dart';
 import 'package:flutter_tools/src/commands/logs.dart';
+import 'package:mockito/mockito.dart';
 import 'package:test/test.dart';
 
 import 'src/mocks.dart';
diff --git a/packages/flutter_tools/test/os_utils_test.dart b/packages/flutter_tools/test/os_utils_test.dart
index b4b91918147..9dacd2f51ca 100644
--- a/packages/flutter_tools/test/os_utils_test.dart
+++ b/packages/flutter_tools/test/os_utils_test.dart
@@ -5,8 +5,8 @@
 import 'dart:io';
 
 import 'package:flutter_tools/src/base/os.dart';
-import 'package:test/test.dart';
 import 'package:path/path.dart' as path;
+import 'package:test/test.dart';
 
 main() => defineTests();
 
diff --git a/packages/flutter_tools/test/stop_test.dart b/packages/flutter_tools/test/stop_test.dart
index bc82dba47fb..40583cdb3c8 100644
--- a/packages/flutter_tools/test/stop_test.dart
+++ b/packages/flutter_tools/test/stop_test.dart
@@ -3,8 +3,8 @@
 // found in the LICENSE file.
 
 import 'package:args/command_runner.dart';
-import 'package:mockito/mockito.dart';
 import 'package:flutter_tools/src/commands/stop.dart';
+import 'package:mockito/mockito.dart';
 import 'package:test/test.dart';
 
 import 'src/mocks.dart';
diff --git a/packages/flutter_tools/test/trace_test.dart b/packages/flutter_tools/test/trace_test.dart
index 9b9f00b0898..e55648c167f 100644
--- a/packages/flutter_tools/test/trace_test.dart
+++ b/packages/flutter_tools/test/trace_test.dart
@@ -3,8 +3,8 @@
 // found in the LICENSE file.
 
 import 'package:args/command_runner.dart';
-import 'package:mockito/mockito.dart';
 import 'package:flutter_tools/src/commands/trace.dart';
+import 'package:mockito/mockito.dart';
 import 'package:test/test.dart';
 
 import 'src/mocks.dart';