Add chrome.power extension API.

chrome/chrome_browser_extensions.gypi

 # Copyright (c) 2013 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 264 matching lines @@
         'browser/extensions/api/page_capture/page_capture_api.cc',
         'browser/extensions/api/page_capture/page_capture_api.h',
         'browser/extensions/api/page_launcher/page_launcher_api.cc',
         'browser/extensions/api/page_launcher/page_launcher_api.h',
         'browser/extensions/api/permissions/permissions_api.cc',
         'browser/extensions/api/permissions/permissions_api.h',
         'browser/extensions/api/permissions/permissions_api_helpers.cc',
         'browser/extensions/api/permissions/permissions_api_helpers.h',
         'browser/extensions/api/plugins/plugins_api.cc',
         'browser/extensions/api/plugins/plugins_api.h',
+        'browser/extensions/api/power/power_api.cc',
+        'browser/extensions/api/power/power_api.h',
+        'browser/extensions/api/power/power_api_constants.cc',
+        'browser/extensions/api/power/power_api_constants.h',
+        'browser/extensions/api/power/power_api_manager.cc',
+        'browser/extensions/api/power/power_api_manager.h',
         'browser/extensions/api/preference/preference_api.cc',
         'browser/extensions/api/preference/preference_api.h',
         'browser/extensions/api/preference/preference_api_constants.cc',
         'browser/extensions/api/preference/preference_api_constants.h',
         'browser/extensions/api/preference/preference_helpers.cc',
         'browser/extensions/api/preference/preference_helpers.h',
         'browser/extensions/api/processes/processes_api.cc',
         'browser/extensions/api/processes/processes_api.h',
         'browser/extensions/api/processes/processes_api_constants.cc',
         'browser/extensions/api/processes/processes_api_constants.h',
@@ skipping 644 matching lines @@
           'variables': {
             'proto_in_dir': 'browser/chromeos/contacts',
             'proto_out_dir': 'chrome/browser/chromeos/contacts',
           },
           'includes': [ '../build/protoc.gypi' ]
         },
       ],
     },],  # 'chromeos=1'
   ],  # 'conditions'
 }