Add experimental.alarms API to allow lazy background pages to

chrome/chrome_browser_extensions.gypi

 # Copyright (c) 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_extensions',
       'type': 'static_library',
       'variables': { 'enable_wexit_time_destructors': 1, },
@@ skipping 42 matching lines @@
         # All .cc, .h, .m, and .mm files under browser/extensions except for
         # tests and mocks.
         'browser/extensions/api/api_function.cc',
         'browser/extensions/api/api_function.h',
         'browser/extensions/api/api_resource.cc',
         'browser/extensions/api/api_resource.h',
         'browser/extensions/api/api_resource_controller.cc',
         'browser/extensions/api/api_resource_controller.h',
         'browser/extensions/api/api_resource_event_notifier.cc',
         'browser/extensions/api/api_resource_event_notifier.h',
+        'browser/extensions/api/alarms/alarms_api.cc',
+        'browser/extensions/api/alarms/alarms_api.h',
         'browser/extensions/api/app/app_api.cc',
         'browser/extensions/api/app/app_api.h',
         'browser/extensions/api/bluetooth/bluetooth_api.cc',
         'browser/extensions/api/bluetooth/bluetooth_api.h',
         'browser/extensions/api/browsing_data/browsing_data_api.cc',
         'browser/extensions/api/browsing_data/browsing_data_api.h',
         'browser/extensions/api/declarative/declarative_api.cc',
         'browser/extensions/api/declarative/declarative_api.h',
         'browser/extensions/api/declarative/initializing_rules_registry.cc',
         'browser/extensions/api/declarative/initializing_rules_registry.h',
@@ skipping 492 matching lines @@
                 }],
               ],
             }],
           ],
         }],
       ],
     },
   ],
 }