Verify the signature on user cloud policy downloads.

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.
 
 {
   'targets': [
     {
       'target_name': 'browser',
       'type': 'static_library',
       'variables': { 'enable_wexit_time_destructors': 1, },
@@ skipping 1428 matching lines @@
         'browser/policy/user_cloud_policy_store.cc',
         'browser/policy/user_cloud_policy_store.h',
         'browser/policy/user_cloud_policy_store_base.cc',
         'browser/policy/user_cloud_policy_store_base.h',
         'browser/policy/user_cloud_policy_store_chromeos.cc',
         'browser/policy/user_cloud_policy_store_chromeos.h',
         'browser/policy/user_info_fetcher.cc',
         'browser/policy/user_info_fetcher.h',
         'browser/policy/user_policy_disk_cache.cc',
         'browser/policy/user_policy_disk_cache.h',
+        'browser/policy/user_policy_key.cc',
+        'browser/policy/user_policy_key.h',
         'browser/policy/user_policy_signin_service.cc',
         'browser/policy/user_policy_signin_service.h',
         'browser/policy/user_policy_signin_service_factory.cc',
         'browser/policy/user_policy_signin_service_factory.h',
         'browser/policy/user_policy_token_loader.cc',
         'browser/policy/user_policy_token_loader.h',
         'browser/predictors/autocomplete_action_predictor.cc',
         'browser/predictors/autocomplete_action_predictor.h',
         'browser/predictors/autocomplete_action_predictor_factory.cc',
         'browser/predictors/autocomplete_action_predictor_factory.h',
@@ skipping 1669 matching lines @@
           'variables': {
             'jni_gen_dir': 'chrome',
           },
           'includes': [ '../build/jni_generator.gypi' ],
         },
       ],
      },
     ],
   ],
 }