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 9457afc5736fea05ce9e60443f86850b9e326c86..9ee361feb4cfb00b81882c02d692e4201affafde 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;
@@ -235,10 +236,11 @@ class CONTENT_EXPORT RenderFrameImpl
     const std::vector<blink::WebCompositionUnderline>& underlines,
     int selection_start,
     int selection_end);
- void OnImeConfirmComposition(
-    const base::string16& text,
-    const gfx::Range& replacement_range,
-    bool keep_selection);
+  void OnImeConfirmComposition(const base::string16& text,
+                               const gfx::Range& replacement_range,
+                               bool keep_selection);
+
+  PluginPowerSaverHelper* plugin_power_saver_helper();
 #endif  // ENABLE_PLUGINS
 
   // May return NULL in some cases, especially if userMediaClient() returns
@@ -674,6 +676,8 @@ 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_;