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

content/browser/web_contents/web_contents_impl.h

Index: content/browser/web_contents/web_contents_impl.h
diff --git a/content/browser/web_contents/web_contents_impl.h b/content/browser/web_contents/web_contents_impl.h
index f4adecbd4e82ce5e061812dab75466bd71129368..e19ec00dc53a70476b029841d08afb6f35d85235 100644
--- a/content/browser/web_contents/web_contents_impl.h
+++ b/content/browser/web_contents/web_contents_impl.h
@@ -46,6 +46,7 @@ struct ViewHostMsg_DateTimeDialogValue_Params;
 struct ViewMsg_PostMessage_Params;
 
 namespace content {
+class BrowserPluginContentOriginWhitelist;
 class BrowserPluginEmbedder;
 class BrowserPluginGuest;
 class BrowserPluginGuestManager;
@@ -1161,6 +1162,11 @@ class CONTENT_EXPORT WebContentsImpl
   // Manages the guest state for browser plugin, if this WebContents is a guest;
   // NULL otherwise.
   scoped_ptr<BrowserPluginGuest> browser_plugin_guest_;
+#if defined(ENABLE_PLUGINS)
+  // Manages the whitelist of plugin content origins exempt from power saving.
+  scoped_ptr<BrowserPluginContentOriginWhitelist>
+  browser_plugin_content_origin_whitelist_;
+#endif
 
   // This must be at the end, or else we might get notifications and use other
   // member variables that are gone.