Created multi-process-friendly PowerMonitor interface.

content/common/gpu/client/gpu_channel_host.h

Index: content/common/gpu/client/gpu_channel_host.h
diff --git a/content/common/gpu/client/gpu_channel_host.h b/content/common/gpu/client/gpu_channel_host.h
index c06989d040c06ee9b64414e05fcce174445dd0d0..7e65f94e35a9082ef19979e7404346da035893ab 100644
--- a/content/common/gpu/client/gpu_channel_host.h
+++ b/content/common/gpu/client/gpu_channel_host.h
@@ -49,6 +49,7 @@ namespace content {
 class CommandBufferProxyImpl;
 class GpuChannelHost;
 struct GpuRenderingStats;
+class PowerMonitorService;
 
 struct GpuListenerInfo {
   GpuListenerInfo();
@@ -248,6 +249,8 @@ class GpuChannelHost : public IPC::Sender,
   typedef base::hash_map<int, CommandBufferProxyImpl*> ProxyMap;
   ProxyMap proxies_;
 
+  scoped_refptr<PowerMonitorService> power_monitor_service_;
+
   DISALLOW_COPY_AND_ASSIGN(GpuChannelHost);
 };