Move apps/shell to extensions/shell.

apps/shell/common/api/api.gyp

-# Copyright 2014 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.
-
-{
-  'targets': [
-    {
-      'target_name': 'shell_api',
-      'type': 'static_library',
-      'sources': [
-        '<@(schema_files)',
-      ],
-      # TODO(jschuh): http://crbug.com/167187 size_t -> int
-      'msvs_disabled_warnings': [ 4267 ],
-      'includes': [
-        '../../../../build/json_schema_bundle_compile.gypi',
-        '../../../../build/json_schema_compile.gypi',
-      ],
-      'variables': {
-        'chromium_code': 1,
-        'non_compiled_schema_files': [
-        ],
-        # TODO: Eliminate these on Android. See crbug.com/305852.
-        'schema_files': [
-          'shell.idl',
-        ],
-        'cc_dir': 'apps/shell/common/api',
-        'root_namespace': 'apps::shell_api',
-        'impl_dir': 'apps/shell/browser/api',
-      },
-      'dependencies': [
-        '<(DEPTH)/skia/skia.gyp:skia',
-      ],
-    },
-  ],
-}