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 d20f5257cd5c79f224701f5692658979c026dd25..d5ec3ce778b49ead4170a0135498011cd259c937 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 +88,8 @@ class CONTENT_EXPORT PluginInstanceThrottler {
 
   virtual blink::WebPlugin* GetWebPlugin() const = 0;
 
+  virtual const gfx::Size& GetSize() const = 0;
+
  protected:
   PluginInstanceThrottler() {}