Move chrome.power API from chrome/ to extensions/.

extensions/extensions.gyp

 # Copyright 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.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'targets': [
     {
@@ skipping 248 matching lines @@
         'browser/api/app_runtime/app_runtime_api.cc',
         'browser/api/app_runtime/app_runtime_api.h',
         'browser/api/async_api_function.cc',
         'browser/api/async_api_function.h',
         'browser/api/dns/dns_api.cc',
         'browser/api/dns/dns_api.h',
         'browser/api/dns/host_resolver_wrapper.cc',
         'browser/api/dns/host_resolver_wrapper.h',
         'browser/api/extensions_api_client.cc',
         'browser/api/extensions_api_client.h',
+        'browser/api/power/power_api.cc',
+        'browser/api/power/power_api.h',
+        'browser/api/power/power_api_manager.cc',
+        'browser/api/power/power_api_manager.h',
         'browser/api/runtime/runtime_api.cc',
         'browser/api/runtime/runtime_api.h',
         'browser/api/runtime/runtime_api_delegate.cc',
         'browser/api/runtime/runtime_api_delegate.h',
         'browser/api/socket/socket.cc',
         'browser/api/socket/socket.h',
         'browser/api/socket/socket_api.cc',
         'browser/api/socket/socket_api.h',
         'browser/api/socket/tcp_socket.cc',
         'browser/api/socket/tcp_socket.h',
@@ skipping 408 matching lines @@
         'test/test_extensions_client.cc',
         'test/test_extensions_client.h',
         'test/test_permission_message_provider.cc',
         'test/test_permission_message_provider.h',
         'test/test_permissions_provider.cc',
         'test/test_permissions_provider.h',
       ],
     },
   ]
 }