Add support for GCM subtypes to desktop Instance ID implementation

chrome/chrome_browser.gypi

 # Copyright 2012 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': {
     # All .cc, .h, .m, and .mm files under browser except for:
     # * tests and mocks.
     # * code below browser/chromeos
     # * code below browser/extensions
@@ skipping 2854 matching lines @@
       'browser/printing/cloud_print/privet_local_printer_lister.cc',
       'browser/printing/cloud_print/privet_local_printer_lister.h',
       'browser/printing/cloud_print/privet_notifications.cc',
       'browser/printing/cloud_print/privet_notifications.h',
       'browser/printing/cloud_print/privet_notifications_factory.cc',
       'browser/printing/cloud_print/privet_notifications_factory.h',
       'browser/printing/cloud_print/privet_url_fetcher.cc',
       'browser/printing/cloud_print/privet_url_fetcher.h',
     ],
     'chrome_browser_services_sources': [
+      'browser/services/gcm/gcm_product_util.cc',
+      'browser/services/gcm/gcm_product_util.h',
       'browser/services/gcm/gcm_profile_service_factory.cc',
       'browser/services/gcm/gcm_profile_service_factory.h',
       'browser/services/gcm/instance_id/instance_id_profile_service.cc',
       'browser/services/gcm/instance_id/instance_id_profile_service.h',
       'browser/services/gcm/instance_id/instance_id_profile_service_factory.cc',
       'browser/services/gcm/instance_id/instance_id_profile_service_factory.h',
     ],
     'chrome_browser_session_sources': [
       'browser/sessions/chrome_tab_restore_service_client.cc',
       'browser/sessions/chrome_tab_restore_service_client.h',
@@ skipping 1464 matching lines @@
             '../components/components.gyp:rlz',
             '../components/components.gyp:search_engines',
             '../rlz/rlz.gyp:rlz_lib',
             'common',
           ],
         },
       ],
     }],
   ],
 }