Add ArcEnabled policy implementation

chrome/chrome_tests.gypi

 # Copyright 2013 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.
 {
   'variables': {
     'build_angle_deqp_tests%': 0,
     'chrome_browser_extensions_test_support_sources': [
       # A list of sources which is shared between different browser tests.
       'browser/apps/app_browsertest_util.cc',
       'browser/apps/app_browsertest_util.h',
@@ skipping 2242 matching lines @@
           'conditions': [
             ['incremental_chrome_dll==1', {
               'UseLibraryDependencyInputs': "true",
             }],
           ],
         },
       },
       'conditions': [
         ['chromeos==1', {
           'dependencies': [
+            '../components/components.gyp:arc_test_support',
             '../third_party/boringssl/boringssl.gyp:boringssl',
           ]
         }, {
           'conditions': [
             ['OS == "linux" or OS == "win"', {
               'sources': [
                 'browser/ui/views/ime/ime_window_browsertest.cc',
               ],
             }]
           ]
@@ skipping 1268 matching lines @@
             'browser',
           ],
           'sources': [
             'tools/service_discovery_sniffer/service_discovery_sniffer.cc',
             'tools/service_discovery_sniffer/service_discovery_sniffer.h',
           ],
         }]
     }],
   ],  # 'conditions'
 }