Schedule idle timer of render thread when user is idle.

content/public/renderer/content_renderer_client.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_PUBLIC_RENDERER_CONTENT_RENDERER_CLIENT_H_
 #define CONTENT_PUBLIC_RENDERER_CONTENT_RENDERER_CLIENT_H_
 #pragma once
 
 #include <string>
 
@@ skipping 75 matching lines @@
   virtual void GetNavigationErrorStrings(
       const WebKit::WebURLRequest& failed_request,
       const WebKit::WebURLError& error,
       std::string* error_html,
       string16* error_description) = 0;
 
   // Returns true if the renderer process should schedule the idle handler when
   // all widgets are hidden.
   virtual bool RunIdleHandlerWhenWidgetsHidden() = 0;
 
+  // Returns true if the renderer process should schedule the idle handler when
+  // the user is idle.
+  virtual bool RunIdleHandlerWhenUserIdle() = 0;
+
   // Returns true if the given url can create popup windows.
   virtual bool AllowPopup(const GURL& creator) = 0;
 
   // Returns true if we should fork a new process for the given navigation.
   virtual bool ShouldFork(WebKit::WebFrame* frame,
                           const GURL& url,
                           bool is_content_initiated,
                           bool is_initial_navigation,
                           bool* send_referrer) = 0;
 
@@ skipping 42 matching lines @@
   // by the media engine.
   virtual bool IsProtocolSupportedForMedia(const GURL& url) = 0;
 
   virtual void RegisterPPAPIInterfaceFactories(
     webkit::ppapi::PpapiInterfaceFactoryManager* factory_manager) = 0;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_RENDERER_CONTENT_RENDERER_CLIENT_H_