Add ArcEnabled policy implementation

chrome/test/BUILD.gn

 # 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.
 
 import("//build/config/chrome_build.gni")
 import("//build/config/compiler/compiler.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//chrome/chrome_tests.gni")
@@ skipping 1054 matching lines @@
       }
       if (toolkit_views) {
         sources -= [ "../browser/ui/views/select_file_dialog_extension_browsertest.cc" ]
       }
     }
     if (enable_configuration_policy) {
       sources += rebase_path(
               chrome_tests_gypi_values.chrome_browser_tests_policy_sources,
               ".",
               "//chrome")
+      if (is_chromeos) {
+        deps += [ "//components/arc:arc_test_support" ]
+      }
     }
     if (enable_web_speech) {
       sources += rebase_path(
               chrome_tests_gypi_values.chrome_browser_tests_speech_sources,
               ".",
               "//chrome")
     }
     if (safe_browsing_mode == 1) {
       sources += rebase_path(
               chrome_tests_gypi_values.chrome_browser_tests_full_safe_browsing_sources,
@@ skipping 1154 matching lines @@
 if (is_android) {
   android_library("unit_tests_java") {
     DEPRECATED_java_in_dir = "//chrome/test/android/unit_tests_apk/src"
     deps = [
       "//base:base_java",
       "//chrome/android:chrome_java",
       "//content/public/android:content_java",
     ]
   }
 }