Remove all traces of ChromeShell from src/build.

build/gn_migration.gypi

 # Copyright (c) 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.
 
 # This file defines five targets that we are using to track the progress of the
 # GYP->GN migration:
 #
 # 'both_gn_and_gyp' lists what GN is currently capable of building and should
 # match the 'both_gn_and_gyp' target in //BUILD.gn.
 #
@@ skipping 273 matching lines @@
             }],
           ],
         }],
         ['OS=="android"', {
           'dependencies': [
             '../base/base.gyp:chromium_android_linker',
             '../breakpad/breakpad.gyp:dump_syms',
             '../build/android/rezip.gyp:rezip_apk_jar',
             '../chrome/chrome.gyp:chrome_public_apk',
             '../chrome/chrome.gyp:chrome_public_test_apk',
-            '../chrome/chrome.gyp:chrome_shell_apk',
             '../chrome/chrome.gyp:chromedriver_webview_shell_apk',
             #"//clank" TODO(GYP) - conditional somehow?
             '../tools/imagediff/image_diff.gyp:image_diff#host',
             '../tools/telemetry/telemetry.gyp:bitmaptools#host',
 
             # TODO(GYP): Remove these when the components_unittests work.
             #"//components/history/core/test:test",
             #"//components/policy:policy_component_test_support",
             #"//components/policy:test_support",
             #"//components/rappor:test_support",
@@ skipping 394 matching lines @@
           'dependencies': [
             # TODO(GYP): All of these targets need to be ported over.
             '../components/components.gyp:policy_win64',
           ]
         }],
       ],
     },
   ]
 }