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 2411 matching lines @@
           'conditions': [
             ['OS=="linux" or OS=="win"', {
               'sources': [
                 'browser/ui/views/ime/input_ime_apitest_nonchromeos.cc',
               ]
             }],
           ]
         }],
         ['configuration_policy==1', {
           'sources': [ '<@(chrome_browser_tests_policy_sources)' ],
+          'conditions': [
+            ['chromeos==1', {
+              'dependencies': [
+                '../components/components.gyp:arc_test_support',
+              ]
+            }]
+          ]
         }],
         ['enable_web_speech==1', {
           'sources': [ '<@(chrome_browser_tests_speech_sources)' ],
         }],
         # TODO(nparker) enable tests for safe_browsing==2.
         ['safe_browsing==1', {
           'sources': [ '<@(chrome_browser_tests_full_safe_browsing_sources)' ],
           'dependencies': [
             '../components/components.gyp:safe_browsing_metadata_proto',
           ],
@@ skipping 1093 matching lines @@
             'browser',
           ],
           'sources': [
             'tools/service_discovery_sniffer/service_discovery_sniffer.cc',
             'tools/service_discovery_sniffer/service_discovery_sniffer.h',
           ],
         }]
     }],
   ],  # 'conditions'
 }