Reduce number of active codecs on low end devices.

content/renderer/media/renderer_webmediaplayer_delegate.h

Index: content/renderer/media/renderer_webmediaplayer_delegate.h
diff --git a/content/renderer/media/renderer_webmediaplayer_delegate.h b/content/renderer/media/renderer_webmediaplayer_delegate.h
index 001f7984a7c7350d51d5de24cda34c04c37214ac..3062cedd364dc7bca7762d1f1332d6ae0c8e82df 100644
--- a/content/renderer/media/renderer_webmediaplayer_delegate.h
+++ b/content/renderer/media/renderer_webmediaplayer_delegate.h
@@ -86,8 +86,9 @@ class CONTENT_EXPORT RendererWebMediaPlayerDelegate
   void AddIdleDelegate(int delegate_id);
   void RemoveIdleDelegate(int delegate_id);
 
-  // Runs periodically to suspend idle delegates in |idle_delegate_map_|.
-  void CleanupIdleDelegates();
+  // Runs periodically to suspend idle delegates in |idle_delegate_map_| which
+  // have been idle for longer than |idle_timeout|.
+  void CleanupIdleDelegates(base::TimeDelta idle_timeout);
 
   // Setter for |is_playing_background_video_| that updates the metrics.
   void SetIsPlayingBackgroundVideo(bool is_playing);
@@ -99,7 +100,7 @@ class CONTENT_EXPORT RendererWebMediaPlayerDelegate
   // inactivity these players will be suspended to release unused resources.
   bool idle_cleanup_running_ = false;
   std::map<int, base::TimeTicks> idle_delegate_map_;
-  base::RepeatingTimer idle_cleanup_timer_;
+  base::Timer idle_cleanup_timer_;
 
   // Amount of time allowed to elapse after a delegate enters the paused before
   // the delegate is suspended.