Schedule idle handler based on CPU usage.

content/test/mock_render_thread.h

Index: content/test/mock_render_thread.h
diff --git a/content/test/mock_render_thread.h b/content/test/mock_render_thread.h
index 4223ab2ac03c724ca819d8db717f98bd63d610d7..ebfb461b6755a0aed3a8732b1988ffa9507dbce8 100644
--- a/content/test/mock_render_thread.h
+++ b/content/test/mock_render_thread.h
@@ -56,11 +56,7 @@ class MockRenderThread : public content::RenderThread {
   virtual void RegisterExtension(v8::Extension* extension) OVERRIDE;
   virtual bool IsRegisteredExtension(
       const std::string& v8_extension_name) const OVERRIDE;
-  virtual void ScheduleIdleHandler(int64 initial_delay_ms) OVERRIDE;
-  virtual void IdleHandler() OVERRIDE;
-  virtual int64 GetIdleNotificationDelayInMs() const OVERRIDE;
-  virtual void SetIdleNotificationDelayInMs(
-      int64 idle_notification_delay_in_ms) OVERRIDE;
+  virtual void ResetIdleTimer() OVERRIDE;
 #if defined(OS_WIN)
   virtual void PreCacheFont(const LOGFONT& log_font) OVERRIDE;
   virtual void ReleaseCachedFonts() OVERRIDE;