support --no-resident on the web (#44028)

packages/flutter_tools/lib/src/build_runner/resident_web_runner.dart

@@ -36,6 +36,7 @@ class DwdsWebRunnerFactory extends WebRunnerFactory {
   ResidentRunner createWebRunner(
     Device device, {
     String target,
+    @required bool stayResident,
     @required FlutterProject flutterProject,
     @required bool ipv6,
     @required DebuggingOptions debuggingOptions,
@@ -46,6 +47,7 @@ class DwdsWebRunnerFactory extends WebRunnerFactory {
       flutterProject: flutterProject,
       debuggingOptions: debuggingOptions,
       ipv6: ipv6,
+      stayResident: stayResident,
     );
   }
 }
@@ -57,12 +59,13 @@ class ResidentWebRunner extends ResidentRunner {
     @required this.flutterProject,
     @required bool ipv6,
     @required DebuggingOptions debuggingOptions,
+    bool stayResident = true,
   }) : super(
           <FlutterDevice>[],
           target: target ?? fs.path.join('lib', 'main.dart'),
           debuggingOptions: debuggingOptions,
           ipv6: ipv6,
-          stayResident: true,
+          stayResident: stayResident,
         );
 
   final Device device;
@@ -316,9 +319,15 @@ class ResidentWebRunner extends ResidentRunner {
     connectionInfoCompleter?.complete(
       DebugConnectionInfo(wsUri: websocketUri)
     );
-    final int result = await waitForAppToFinish();
+
+    if (stayResident) {
+      await waitForAppToFinish();
+    } else {
+      await stopEchoingDeviceLog();
+      await exitApp();
+    }
     await cleanupAtFinish();
-    return result;
+    return 0;
   }
 
   @override

packages/flutter_tools/lib/src/commands/daemon.dart

@@ -435,6 +435,7 @@ class AppDomain extends Domain {
         target: target,
         debuggingOptions: options,
         ipv6: ipv6,
+        stayResident: true,
       );
     } else if (enableHotReload) {
       runner = HotRunner(

packages/flutter_tools/lib/src/commands/run.dart

@@ -457,6 +457,7 @@ class RunCommand extends RunCommandBase {
         flutterProject: flutterProject,
         ipv6: ipv6,
         debuggingOptions: _createDebuggingOptions(),
+        stayResident: stayResident,
       );
     } else {
       runner = ColdRunner(

packages/flutter_tools/lib/src/web/web_runner.dart

@@ -19,6 +19,7 @@ abstract class WebRunnerFactory {
   ResidentRunner createWebRunner(
     Device device, {
     String target,
+    @required bool stayResident,
     @required FlutterProject flutterProject,
     @required bool ipv6,
     @required DebuggingOptions debuggingOptions,

packages/flutter_tools/test/general.shard/resident_web_runner_test.dart

@@ -154,6 +154,19 @@ void main() {
     Logger: () => DelegateLogger(BufferLogger()),
   }));
 
+  test('Can successfully run and disconnect with --no-resident', () => testbed.run(() async {
+    _setupMocks();
+    residentWebRunner = ResidentWebRunner(
+      mockWebDevice,
+      flutterProject: FlutterProject.current(),
+      debuggingOptions: DebuggingOptions.enabled(BuildInfo.debug),
+      ipv6: true,
+      stayResident: false,
+    );
+
+    expect(await residentWebRunner.run(), 0);
+  }));
+
   test('Listens to stdout streams before running main', () => testbed.run(() async {
     _setupMocks();
     final BufferLogger bufferLogger = logger;