rendering_helper - Wait for rendering before resetting the decoder.

content/common/gpu/media/rendering_helper.h

Index: content/common/gpu/media/rendering_helper.h
diff --git a/content/common/gpu/media/rendering_helper.h b/content/common/gpu/media/rendering_helper.h
index 6b0013f5b93b1dcad4eb313bd648b857cf867860..1ebc91bf1b65cc472a98320894666101eab3189b 100644
--- a/content/common/gpu/media/rendering_helper.h
+++ b/content/common/gpu/media/rendering_helper.h
@@ -100,8 +100,9 @@ class RenderingHelper {
   void QueueVideoFrame(size_t window_id,
                        scoped_refptr<VideoFrameTexture> video_frame);
 
-  // Drops all the pending video frames of the specified window.
-  void DropPendingFrames(size_t window_id);
+  // Flushes the pending frames. Notify the rendering_helper there won't be
+  // more video frames.
+  void Flush(size_t window_id);
 
   // Delete |texture_id|.
   void DeleteTexture(uint32 texture_id);
@@ -130,6 +131,9 @@ class RenderingHelper {
     // timer-driven playback.
     bool last_frame_rendered;
 
+    // True if there won't be any new video frames comming.
+    bool is_flushing;
+
     // The video frames pending for rendering.
     std::queue<scoped_refptr<VideoFrameTexture> > pending_frames;