Created multi-process-friendly PowerMonitor interface.

content/browser/gpu/gpu_process_host_ui_shim.h

Index: content/browser/gpu/gpu_process_host_ui_shim.h
diff --git a/content/browser/gpu/gpu_process_host_ui_shim.h b/content/browser/gpu/gpu_process_host_ui_shim.h
index 9f4329a10a5898418a502e13b544af7fe572e8cb..399ce8f8b2444db48236fcb32bf82c4e9806bc1b 100644
--- a/content/browser/gpu/gpu_process_host_ui_shim.h
+++ b/content/browser/gpu/gpu_process_host_ui_shim.h
@@ -19,6 +19,7 @@
 #include "base/threading/non_thread_safe.h"
 #include "content/common/content_export.h"
 #include "content/common/message_router.h"
+#include "content/common/power_monitor_message_broadcaster.h"
 #include "content/public/common/gpu_memory_stats.h"
 #include "gpu/config/gpu_info.h"
 #include "ipc/ipc_listener.h"
@@ -111,6 +112,8 @@ class GpuProcessHostUIShim : public IPC::Listener,
 
   // The serial number of the GpuProcessHost / GpuProcessHostUIShim pair.
   int host_id_;
+
+  PowerMonitorMessageBroadcaster power_monitor_broadcaster_;
 };
 
 }  // namespace content