Created multi-process-friendly PowerMonitor interface.

content/content_common.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.
 
 {
   'dependencies': [
     '../base/base.gyp:base',
     '../components/tracing.gyp:tracing',
     '../media/media.gyp:media',
     '../net/net.gyp:net',
@@ skipping 272 matching lines @@
     'common/page_state_serialization.h',
     'common/page_zoom.cc',
     'common/pepper_messages.h',
     'common/pepper_plugin_registry.cc',
     'common/pepper_plugin_registry.h',
     'common/pepper_renderer_instance_data.cc',
     'common/pepper_renderer_instance_data.h',
     'common/plugin_carbon_interpose_constants_mac.cc',
     'common/plugin_carbon_interpose_constants_mac.h',
     'common/plugin_process_messages.h',
+    'common/power_monitor_broadcast_source.cc',
+    'common/power_monitor_broadcast_source.h',
+    'common/power_monitor_message_broadcaster.cc',
+    'common/power_monitor_message_broadcaster.h',
+    'common/power_monitor_messages.h',
     'common/process_type.cc',
     'common/quota_messages.h',
     'common/resource_messages.cc',
     'common/resource_messages.h',
     'common/sandbox_init_linux.cc',
     'common/sandbox_init_mac.cc',
     'common/sandbox_init_mac.h',
     'common/sandbox_init_win.cc',
     'common/sandbox_mac.h',
     'common/sandbox_mac.mm',
@@ skipping 238 matching lines @@
         '..\\third_party\\directxsdk\\files\\Redist\\<(input)',
         '<(output)',
         '<(PRODUCT_DIR)',
         ],
         'msvs_cygwin_shell': 1,
       },
      ]
     }],
   ],
 }