Allow transitioning to HAVE_METADATA before pipeline initialization completes.

webkit/media/webmediaplayer_proxy.h

Index: webkit/media/webmediaplayer_proxy.h
diff --git a/webkit/media/webmediaplayer_proxy.h b/webkit/media/webmediaplayer_proxy.h
index 30bd1d544c59d2e57a01169d6304cd17029f3bc8..84e96606cbb7c4f488a9e6ec9f0122182f41c521 100644
--- a/webkit/media/webmediaplayer_proxy.h
+++ b/webkit/media/webmediaplayer_proxy.h
@@ -79,6 +79,7 @@ class WebMediaPlayerProxy
   void PipelineSeekCallback(media::PipelineStatus status);
   void PipelineEndedCallback(media::PipelineStatus status);
   void PipelineErrorCallback(media::PipelineStatus error);
+  void PipelineReadyStateCallback(media::Pipeline::ReadyState readyState);
 
   // ChunkDemuxerClient implementation.
   virtual void DemuxerOpened(media::ChunkDemuxer* demuxer) OVERRIDE;
@@ -137,6 +138,9 @@ class WebMediaPlayerProxy
   // playback.
   void PipelineErrorTask(media::PipelineStatus error);
 
+  // Notify |webmediaplayer_| of readyState changes.
+  void PipelineReadyStateTask(media::Pipeline::ReadyState readyState);
+
   // Inform |webmediaplayer_| whether the video content is opaque.
   void SetOpaqueTask(bool opaque);