Fix remaining WeakPtrFactory ordering problems

content/renderer/media/remote_media_stream_impl.h

Index: content/renderer/media/remote_media_stream_impl.h
diff --git a/content/renderer/media/remote_media_stream_impl.h b/content/renderer/media/remote_media_stream_impl.h
index 0c230bac73fb3b43d173eb26032c2630efe21799..ec97f233ed9443420879e0e3eaf89e694a5ab637 100644
--- a/content/renderer/media/remote_media_stream_impl.h
+++ b/content/renderer/media/remote_media_stream_impl.h
@@ -91,13 +91,14 @@ class CONTENT_EXPORT RemoteMediaStreamImpl {
                  scoped_ptr<RemoteVideoTrackAdapters> video_tracks);
 
   const scoped_refptr<base::SingleThreadTaskRunner> signaling_thread_;
-  base::WeakPtrFactory<RemoteMediaStreamImpl> weak_factory_;
-  const scoped_refptr<Observer> observer_;  // must be after weak_factory_
+  scoped_refptr<Observer> observer_;
 
   RemoteVideoTrackAdapters video_track_observers_;
   RemoteAudioTrackAdapters audio_track_observers_;
   blink::WebMediaStream webkit_stream_;
 
+  base::WeakPtrFactory<RemoteMediaStreamImpl> weak_factory_;
+
   DISALLOW_COPY_AND_ASSIGN(RemoteMediaStreamImpl);
 };