WeakPtr destruction order cleanup: media edition.

media/filters/video_renderer_impl.h

Index: media/filters/video_renderer_impl.h
diff --git a/media/filters/video_renderer_impl.h b/media/filters/video_renderer_impl.h
index 2baca8a4a582f362e16cba8be90e4330cf6c8966..b45f847259ce8b27ece43ead3cf758e8ab654cf4 100644
--- a/media/filters/video_renderer_impl.h
+++ b/media/filters/video_renderer_impl.h
@@ -137,8 +137,6 @@ class MEDIA_EXPORT VideoRendererImpl
   void UpdateStatsAndWait_Locked(base::TimeDelta wait_duration);
 
   scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
-  base::WeakPtrFactory<VideoRendererImpl> weak_factory_;
-  base::WeakPtr<VideoRendererImpl> weak_this_;
 
   // Used for accessing data members.
   base::Lock lock_;
@@ -240,6 +238,9 @@ class MEDIA_EXPORT VideoRendererImpl
   int frames_decoded_;
   int frames_dropped_;
 
+  // NOTE: Weak pointers must be invalidated before all other member variables.
+  base::WeakPtrFactory<VideoRendererImpl> weak_factory_;
+
   DISALLOW_COPY_AND_ASSIGN(VideoRendererImpl);
 };