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

content/renderer/render_frame_impl.h

Index: content/renderer/render_frame_impl.h
diff --git a/content/renderer/render_frame_impl.h b/content/renderer/render_frame_impl.h
index b795c1fd8dfcf9f0c8ad5fda99854032624e524a..bde35f1ed0ed9fcb23353821c8e48dee8f7b5c64 100644
--- a/content/renderer/render_frame_impl.h
+++ b/content/renderer/render_frame_impl.h
@@ -72,6 +72,7 @@ class NotificationPermissionDispatcher;
 class NotificationProvider;
 class PageState;
 class PepperPluginInstanceImpl;
+class PluginPowerSaverHelper;
 class PushMessagingDispatcher;
 class RendererAccessibility;
 class RendererCdmManager;
@@ -238,6 +239,8 @@ class CONTENT_EXPORT RenderFrameImpl
   void OnImeConfirmComposition(const base::string16& text,
                                const gfx::Range& replacement_range,
                                bool keep_selection);
+
+  PluginPowerSaverHelper* plugin_power_saver_helper();
 #endif  // defined(ENABLE_PLUGINS)
 
   // May return NULL in some cases, especially if userMediaClient() returns
@@ -677,6 +680,8 @@ class CONTENT_EXPORT RenderFrameImpl
   // Current text input composition text. Empty if no composition is in
   // progress.
   base::string16 pepper_composition_text_;
+
+  PluginPowerSaverHelper* plugin_power_saver_helper_;
 #endif
 
   RendererWebCookieJarImpl cookie_jar_;