Fix processing of multiple stream status changes by renderer

media/renderers/renderer_impl.h

Index: media/renderers/renderer_impl.h
diff --git a/media/renderers/renderer_impl.h b/media/renderers/renderer_impl.h
index 07ea2241cfb145ede0b0a233e3adc779bdcf1a23..46fb71c0fe79aa0c7986d9baa65ca1af1fe96513 100644
--- a/media/renderers/renderer_impl.h
+++ b/media/renderers/renderer_impl.h
@@ -5,6 +5,7 @@
 #ifndef MEDIA_RENDERERS_RENDERER_IMPL_H_
 #define MEDIA_RENDERERS_RENDERER_IMPL_H_
 
+#include <list>
 #include <memory>
 #include <vector>
 
@@ -60,7 +61,7 @@ class MEDIA_EXPORT RendererImpl : public Renderer {
   void SetVolume(float volume) final;
   base::TimeDelta GetMediaTime() final;
 
-  void RestartStreamPlayback(DemuxerStream* stream,
+  void OnStreamStatusChanged(DemuxerStream* stream,
                              bool enabled,
                              base::TimeDelta time);
 
@@ -146,6 +147,8 @@ class MEDIA_EXPORT RendererImpl : public Renderer {
   void OnVideoNaturalSizeChange(const gfx::Size& size);
   void OnVideoOpacityChange(bool opaque);
 
+  void OnStreamRestartCompleted();
+
   State state_;
 
   // Task runner used to execute pipeline tasks.
@@ -197,6 +200,7 @@ class MEDIA_EXPORT RendererImpl : public Renderer {
 
   bool restarting_audio_ = false;
   bool restarting_video_ = false;
+  std::list<base::Closure> pending_stream_status_notifications_;
 
   base::WeakPtr<RendererImpl> weak_this_;
   base::WeakPtrFactory<RendererImpl> weak_factory_;