diff --git a/sky/build/flx.gni b/sky/build/flx.gni
deleted file mode 100644
index 2822e0c7ce0..00000000000
--- a/sky/build/flx.gni
+++ /dev/null
@@ -1,65 +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("//sky/engine/bindings/bindings.gni")
-
-template("flx") {
-  bundle_prefix = target_name
-  bundle = "$target_gen_dir/${bundle_prefix}.flx"
-  snapshot = "$target_gen_dir/${bundle_prefix}_snapshot.bin"
-
-  action("gen_${bundle_prefix}_bundle") {
-    main_dart = invoker.main_dart
-    asset_base = "//sky/packages/material_design_icons/lib/icons"
-
-    inputs = [
-      main_dart,
-    ]
-    outputs = [
-      bundle,
-    ]
-
-    if (defined(invoker.sources)) {
-      inputs += sources
-    }
-
-    sky_snapshot_dir =
-        get_label_info("//sky/tools/sky_snapshot($host_toolchain)", "root_out_dir")
-
-    script = "//sky/tools/sky_build.py"
-
-    args = [
-      "--asset-base", rebase_path(asset_base, root_build_dir),
-      "--compiler", rebase_path("$sky_snapshot_dir/sky_snapshot", root_build_dir),
-      "--main", rebase_path(main_dart, root_build_dir),
-      "--package-root", rebase_path("packages", root_build_dir),
-      "--snapshot", rebase_path(snapshot, root_build_dir),
-      "--output-file", rebase_path(bundle, root_build_dir),
-    ]
-
-    if(is_ios) {
-      # This makes the tools bypass the script snapshot compiler
-      args += [ "--precompiled" ]
-    }
-
-    if (defined(invoker.manifest)) {
-      inputs += [ invoker.manifest ]
-      args += [
-        "--manifest", rebase_path(invoker.manifest, root_build_dir),
-      ]
-    }
-
-    deps = [ "//sky/tools/sky_snapshot($dart_host_toolchain)" ]
-
-    if (defined(invoker.deps)) {
-      deps += invoker.deps
-    }
-  }
-
-  group(target_name) {
-    deps = [
-      ":gen_${bundle_prefix}_bundle",
-    ]
-  }
-}
diff --git a/sky/build/sky_app.gni b/sky/build/sky_app.gni
deleted file mode 100644
index bd7e9d10d7b..00000000000
--- a/sky/build/sky_app.gni
+++ /dev/null
@@ -1,184 +0,0 @@
-# Copyright 2015 The Chromium Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-import("//sky/build/flx.gni")
-
-template("sky_app") {
-  flx_target_name = target_name
-
-  if (is_android || is_ios || is_mac) {
-    flx_target_name = "app"
-  }
-
-  flx(flx_target_name) {
-    main_dart = invoker.main_dart
-
-    if (defined(invoker.manifest)) {
-      manifest = invoker.manifest
-    }
-
-    if (defined(invoker.sources)) {
-      sources = invoker.sources
-    }
-  }
-
-  if (is_android) {
-    import("//build/config/android/rules.gni")
-
-    bundle_prefix = target_name
-
-    copy("gen_${bundle_prefix}_bundle") {
-      sources = [
-        "$target_gen_dir/app.flx",
-      ]
-      outputs = [
-        "$target_gen_dir/${bundle_prefix}.flx",
-      ]
-
-      deps = [
-        ":app",
-      ]
-    }
-
-    copy_ex("assets") {
-      clear_dir = true
-      dest = "$target_gen_dir/assets"
-
-      sources = [
-        "$root_build_dir/icudtl.dat",
-        "$target_gen_dir/app.flx"
-      ]
-      if (defined(invoker.manifest)) {
-        sources += [ invoker.manifest ]
-      }
-      deps = [
-        ":$flx_target_name",
-        ":gen_${bundle_prefix}_bundle",
-        "//third_party/icu:icudata",
-      ]
-
-      if (defined(invoker.bundles)) {
-        foreach(bundle, invoker.bundles) {
-          bundle_gen_dir = get_label_info(bundle, "target_gen_dir")
-          bundle_dir = get_label_info(bundle, "dir")
-          bundle_name = get_label_info(bundle, "name")
-          sources += [ "$bundle_gen_dir/${bundle_name}.flx" ]
-          deps += [
-            "$bundle_dir:gen_${bundle_name}_bundle",
-          ]
-        }
-      }
-    }
-
-    android_apk(target_name) {
-      apk_name = invoker.apk_name
-      android_manifest = "apk/AndroidManifest.xml"
-
-      native_libs = [ "libsky_shell.so" ]
-      asset_location = "$target_gen_dir/assets"
-
-      extensions_to_not_compress = ".flx"
-
-      deps = [
-        "//base:base_java",
-        "//sky/shell:assets",
-        "//sky/shell:java",
-        "//sky/shell:sky_shell",
-        ":assets",
-      ]
-
-      if (defined(invoker.deps)) {
-        deps += invoker.deps
-      }
-    }
-  } else if (is_ios && defined(invoker.info_plist)) {
-    import("//build/config/ios/rules.gni")
-    import("//build/config/ios/ios_sdk.gni")
-    import("//sky/engine/bindings/bindings.gni")
-
-    ios_app(target_name) {
-      app_name = target_name + "_app"
-
-      code_signing_identity = ios_code_signing_identity
-
-      info_plist = invoker.info_plist
-
-      if (defined(invoker.entitlements_path)) {
-        entitlements_path = invoker.entitlements_path
-      } else {
-        entitlements_path = "//sky/shell/platform/ios/Entitlements.xcent"
-      }
-
-      resources_gen_target_name = target_name + "_res"
-      resource_copy_ios(resources_gen_target_name) {
-        resources = [
-          "//third_party/icu/android/icudtl.dat",
-          "$target_gen_dir/app.flx",
-        ]
-
-        if (defined(invoker.launcher_resources)) {
-          resources += invoker.launcher_resources
-        }
-
-        bundle_directory = "."
-        deps = [ ":app" ]
-      }
-
-      precompiled_gen_target = target_name + "_precompiled"
-      dart_precompile(precompiled_gen_target) {
-        dart_package_root = rebase_path("packages", root_build_dir)
-        dart_script = invoker.main_dart
-      }
-
-      deps = [
-        "//sky/shell:ios_scaffolding",
-        ":$resources_gen_target_name",
-        ":$flx_target_name",
-        ":$precompiled_gen_target",
-      ]
-
-      if (defined(invoker.deps)) {
-        deps += invoker.deps
-      }
-    }
-  } else if(is_mac && defined(invoker.info_plist)) {
-    import("//build/config/mac/rules.gni")
-
-    mac_app(target_name) {
-
-      app_name = target_name + "_app"
-      info_plist = invoker.info_plist
-      xibs = invoker.xibs
-
-      resources_gen_target_name = target_name + "_res"
-      resource_copy_mac(resources_gen_target_name) {
-        resources = [
-          "//third_party/icu/android/icudtl.dat",
-          "$target_gen_dir/app.flx",
-        ]
-
-        if (defined(invoker.launcher_resources)) {
-          resources += invoker.launcher_resources
-        }
-
-        bundle_directory = "."
-        deps = [ ":app" ]
-      }
-
-      deps = [
-        ":$resources_gen_target_name",
-        "//sky/shell:mac_scaffolding",
-      ]
-
-      if (defined(invoker.deps)) {
-        deps += invoker.deps
-      }
-    }
-
-  } else if(is_ios || is_mac) {
-    # No Info.plist specified. But we still need an empty target
-    group(target_name) {
-    }
-  }
-}
diff --git a/sky/tools/run_sky_snapshot.py b/sky/tools/run_sky_snapshot.py
deleted file mode 100755
index 15daa9c6f6e..00000000000
--- a/sky/tools/run_sky_snapshot.py
+++ /dev/null
@@ -1,33 +0,0 @@
-#!/usr/bin/env python
-# 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 argparse
-import os
-import subprocess
-import sys
-
-SKY_TOOLS_DIR = os.path.dirname(os.path.abspath(__file__))
-SRC_ROOT = os.path.dirname(os.path.dirname(SKY_TOOLS_DIR))
-WORKBENCH = os.path.join(SRC_ROOT, 'sky', 'packages', 'workbench')
-
-def main():
-    parser = argparse.ArgumentParser(description='Builds a Dart snapshot file')
-    parser.add_argument('--main', type=str)
-    parser.add_argument('--compiler', type=str)
-    parser.add_argument('--package-root', type=str)
-    parser.add_argument('--snapshot', type=str)
-    args = parser.parse_args()
-
-    command = [
-        os.path.abspath(args.compiler),
-        '--package-root=%s' % os.path.abspath(args.package_root),
-        '--snapshot=%s' % os.path.abspath(args.snapshot),
-        os.path.abspath(args.main),
-    ]
-
-    subprocess.check_call(command, cwd=WORKBENCH)
-
-if __name__ == '__main__':
-    sys.exit(main())
diff --git a/sky/tools/sky_build.py b/sky/tools/sky_build.py
deleted file mode 100755
index f8a3a8a86d4..00000000000
--- a/sky/tools/sky_build.py
+++ /dev/null
@@ -1,52 +0,0 @@
-#!/usr/bin/env python
-# 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 argparse
-import os
-import subprocess
-import sys
-
-SKY_TOOLS_DIR = os.path.dirname(os.path.abspath(__file__))
-SRC_ROOT = os.path.dirname(os.path.dirname(SKY_TOOLS_DIR))
-DART_SDK = os.path.join(SRC_ROOT, 'third_party', 'dart-sdk', 'dart-sdk', 'bin')
-
-def main():
-    parser = argparse.ArgumentParser(description='Packaging tool for Sky apps')
-    parser.add_argument('--asset-base', type=str)
-    parser.add_argument('--compiler', type=str)
-    parser.add_argument('--main', type=str)
-    parser.add_argument('--manifest', type=str)
-    parser.add_argument('--output-file', type=str)
-    parser.add_argument('--package-root', type=str)
-    parser.add_argument('--snapshot', type=str)
-    parser.add_argument('--precompiled', dest='precompiled', action='store_true')
-    parser.set_defaults(precompiled=False)
-
-    args = parser.parse_args()
-
-    command = [
-        'flutter',
-        'build',
-        '--asset-base', os.path.abspath(args.asset_base),
-        '--compiler', os.path.abspath(args.compiler),
-        '--main', os.path.abspath(args.main),
-        '--output-file', os.path.abspath(args.output_file),
-        '--package-root', os.path.abspath(args.package_root),
-        '--snapshot', os.path.abspath(args.snapshot),
-        '--private-key', os.path.abspath(os.path.join(args.package_root, '..', 'privatekey.der')),
-    ]
-
-    if args.precompiled:
-        command += [
-            '--precompiled'
-        ]
-
-    if args.manifest:
-        command += ['--manifest', os.path.abspath(args.manifest)]
-
-    subprocess.check_call(command, cwd=os.path.join(args.package_root, '..'))
-
-if __name__ == '__main__':
-    sys.exit(main())
diff --git a/sky/tools/skydoc.py b/sky/tools/skydoc.py
deleted file mode 100755
index 4109f08969f..00000000000
--- a/sky/tools/skydoc.py
+++ /dev/null
@@ -1,42 +0,0 @@
-#!/usr/bin/env python
-# 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 argparse
-import os
-import subprocess
-import sys
-import webbrowser
-
-SKY_TOOLS_DIR = os.path.dirname(os.path.abspath(__file__))
-SKY_ROOT = os.path.dirname(SKY_TOOLS_DIR)
-SRC_ROOT = os.path.dirname(SKY_ROOT)
-WORKBENCH_DIR = os.path.join(SRC_ROOT, 'sky', 'packages', 'workbench')
-SKY_PACKAGE = os.path.join(SRC_ROOT, 'sky', 'packages', 'sky')
-
-DART_SDK = os.path.join(SRC_ROOT, 'third_party', 'dart-sdk', 'dart-sdk', 'bin')
-DARTDOC = os.path.join(DART_SDK, 'dartdoc')
-
-def main():
-    parser = argparse.ArgumentParser(description='Sky Documentation Generator')
-    parser.add_argument('--open', action='store_true',
-         help='Open docs after building.')
-    args = parser.parse_args()
-
-    doc_dir = os.path.join(SKY_PACKAGE, 'doc', 'api')
-
-    cmd = [
-        DARTDOC,
-        '--header', os.path.join(SKY_PACKAGE, 'doc', 'styles.html'),
-        '--input', SKY_PACKAGE,
-        '--output', doc_dir
-    ]
-    subprocess.check_call(cmd, cwd=WORKBENCH_DIR)
-
-    if args.open:
-        webbrowser.open(os.path.join(doc_dir, 'index.html'))
-
-
-if __name__ == '__main__':
-    sys.exit(main())