Plugin Power Saver: Implement size-based heuristic for peripheral content.

content/renderer/pepper/pepper_plugin_instance_impl.h

Index: content/renderer/pepper/pepper_plugin_instance_impl.h
diff --git a/content/renderer/pepper/pepper_plugin_instance_impl.h b/content/renderer/pepper/pepper_plugin_instance_impl.h
index 36d2a268c52860f15b38db3c5b6dc29431fa8531..a7cf1eac73b9b873dd5ee343fa12bb01455274b7 100644
--- a/content/renderer/pepper/pepper_plugin_instance_impl.h
+++ b/content/renderer/pepper/pepper_plugin_instance_impl.h
@@ -534,6 +534,7 @@ class CONTENT_EXPORT PepperPluginInstanceImpl
 
   // RenderFrameObserver
   void OnDestruct() override;
+  bool OnMessageReceived(const IPC::Message& message) override;
 
   void AddLatencyInfo(const std::vector<ui::LatencyInfo>& latency_info);
 
@@ -689,8 +690,9 @@ class CONTENT_EXPORT PepperPluginInstanceImpl
 
   // Peripheral content is cross-origin plugin content determined heuristically
   // to be not the "main attraction" of the webpage.
-  bool IsPeripheralContent() const;
+  bool IsPeripheralContent();
   void SetPluginThrottled(bool throttled);
+  void OnPluginContentOriginWhitelisted(const GURL& content_origin);
 
   RenderFrameImpl* render_frame_;
   base::Closure instance_deleted_callback_;