Using PolicyServiceWatcher instead of PolicyWatcherLinux/Win/Mac.

components/policy/core/common/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/features.gni")
 
 source_set("common") {
   defines = [ "POLICY_COMPONENT_IMPLEMENTATION" ]
 
   if (enable_configuration_policy) {
@@ skipping 43 matching lines @@
       "cloud/user_cloud_policy_manager.cc",
       "cloud/user_cloud_policy_manager.h",
       "cloud/user_cloud_policy_store.cc",
       "cloud/user_cloud_policy_store.h",
       "cloud/user_cloud_policy_store_base.cc",
       "cloud/user_cloud_policy_store_base.h",
       "cloud/user_info_fetcher.cc",
       "cloud/user_info_fetcher.h",
       "cloud/user_policy_request_context.cc",
       "cloud/user_policy_request_context.h",
-      "async_policy_loader.cc",
       "async_policy_loader.h",
+      "async_policy_loader.mm",

[Lei Zhang, 2015/01/14 00:20:02]

I think you changed the wrong file name here?

[Łukasz Anforowicz, 2015/01/14 00:48:51]

Thanks for catching this.  Fixed.

       "async_policy_provider.cc",
       "async_policy_provider.h",
       "config_dir_policy_loader.cc",
       "config_dir_policy_loader.h",
       "configuration_policy_provider.cc",
       "configuration_policy_provider.h",
       "external_data_fetcher.cc",
       "external_data_fetcher.h",
       "external_data_manager.h",
       "mac_util.cc",
@@ skipping 114 matching lines @@
       "policy_service.cc",
       "policy_service.h",
       "policy_service_stub.cc",
       "policy_service_stub.h",
     ]
     deps = [
       "//base",
     ]
   }
 }