Plugin Power Saver: Throttle 'large' plugins that appear small.

content/public/renderer/plugin_instance_throttler.h

Index: content/public/renderer/plugin_instance_throttler.h
diff --git a/content/public/renderer/plugin_instance_throttler.h b/content/public/renderer/plugin_instance_throttler.h
index d21acafcaff0ef64cc7dcaae28ebcca86e1ed322..0b33cc4c88e5c63e60f15bc5cd88f3a70c96ecb9 100644
--- a/content/public/renderer/plugin_instance_throttler.h
+++ b/content/public/renderer/plugin_instance_throttler.h
@@ -14,6 +14,10 @@ class WebPlugin;
 struct WebPluginParams;
 }
 
+namespace gfx {
+class Size;
+}
+
 class GURL;
 class SkBitmap;
 
@@ -84,6 +88,9 @@ class CONTENT_EXPORT PluginInstanceThrottler {
 
   virtual blink::WebPlugin* GetWebPlugin() const = 0;
 
+  // Gets the throttler's best estimate of the plugin's visible dimensions.
+  virtual const gfx::Size& GetSize() const = 0;
+
   // Throttler needs to know when the plugin audio is throttled, as this may
   // prevent the plugin from generating new frames.
   virtual void NotifyAudioThrottled() = 0;