Use stopped_on_render_loop_ to prevent further work from executing in BufferedDataSource.

webkit/glue/media/buffered_data_source.h

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef WEBKIT_GLUE_MEDIA_BUFFERED_DATA_SOURCE_H_
 #define WEBKIT_GLUE_MEDIA_BUFFERED_DATA_SOURCE_H_
 
 #include <string>
 
 #include "base/callback.h"
@@ skipping 399 matching lines @@
   MessageLoop* render_loop_;
 
   // Protects |stopped_|.
   Lock lock_;
 
   // Stop signal to suppressing activities. This variable is set on the pipeline
   // thread and read from the render thread.
   bool stop_signal_received_;
 
   // This variable is set by CleanupTask() that indicates this object is stopped
-  // on the render thread.
+  // on the render thread and work should no longer progress.
   bool stopped_on_render_loop_;
 
   // This variable is true when we are in a paused state and false when we
   // are in a playing state.
   bool media_is_paused_;
 
   // This timer is to run the WatchDogTask repeatedly. We use a timer instead
   // of doing PostDelayedTask() reduce the extra reference held by the message
   // loop. The RepeatingTimer does PostDelayedTask() internally, by using it
   // the message loop doesn't hold a reference for the watch dog task.
   base::RepeatingTimer<BufferedDataSource> watch_dog_timer_;
 
   // Keeps track of whether we used a Range header in the initialization
   // request.
   bool using_range_request_;
 
   DISALLOW_COPY_AND_ASSIGN(BufferedDataSource);
 };
 
 }  // namespace webkit_glue
 
 #endif  // WEBKIT_GLUE_MEDIA_BUFFERED_DATA_SOURCE_H_