Replace MessageLoopProxy with SingleThreadTaskRunner for media/filters/ + associated code.

media/filters/video_renderer_base.h

 // Copyright (c) 2012 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 MEDIA_FILTERS_VIDEO_RENDERER_BASE_H_
 #define MEDIA_FILTERS_VIDEO_RENDERER_BASE_H_
 
 #include <deque>
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_vector.h"
 #include "base/memory/weak_ptr.h"
 #include "base/synchronization/condition_variable.h"
 #include "base/synchronization/lock.h"
 #include "base/threading/platform_thread.h"
 #include "media/base/decryptor.h"
 #include "media/base/demuxer_stream.h"
 #include "media/base/pipeline_status.h"
 #include "media/base/video_decoder.h"
 #include "media/base/video_frame.h"
 #include "media/base/video_renderer.h"
 #include "media/filters/video_frame_stream.h"
 
 namespace base {
-class MessageLoopProxy;
+class SingleThreadTaskRunner;
 }
 
 namespace media {
 
 // VideoRendererBase creates its own thread for the sole purpose of timing frame
 // presentation.  It handles reading from the VideoFrameStream and stores the
 // results in a queue of decoded frames and executing a callback when a frame is
 // ready for rendering.
 class MEDIA_EXPORT VideoRendererBase
     : public VideoRenderer,
@@ skipping 11 matching lines @@
   // frame is available for painting.
   //
   // |set_opaque_cb| is executed when the renderer is initialized to inform
   // the player whether the decoded output will be opaque or not.
   //
   // Implementors should avoid doing any sort of heavy work in this method and
   // instead post a task to a common/worker thread to handle rendering.  Slowing
   // down the video thread may result in losing synchronization with audio.
   //
   // Setting |drop_frames_| to true causes the renderer to drop expired frames.
-  VideoRendererBase(const scoped_refptr<base::MessageLoopProxy>& message_loop,
-                    ScopedVector<VideoDecoder> decoders,
-                    const SetDecryptorReadyCB& set_decryptor_ready_cb,
-                    const PaintCB& paint_cb,
-                    const SetOpaqueCB& set_opaque_cb,
-                    bool drop_frames);
+  VideoRendererBase(
+      const scoped_refptr<base::SingleThreadTaskRunner>& task_runner,
+      ScopedVector<VideoDecoder> decoders,
+      const SetDecryptorReadyCB& set_decryptor_ready_cb,
+      const PaintCB& paint_cb,
+      const SetOpaqueCB& set_opaque_cb,
+      bool drop_frames);
   virtual ~VideoRendererBase();
 
   // VideoRenderer implementation.
   virtual void Initialize(DemuxerStream* stream,
                           const PipelineStatusCB& init_cb,
                           const StatisticsCB& statistics_cb,
                           const TimeCB& max_time_cb,
                           const NaturalSizeChangedCB& size_changed_cb,
                           const base::Closure& ended_cb,
                           const PipelineStatusCB& error_cb,
@@ skipping 54 matching lines @@
   // A read is scheduled to replace the frame.
   void DropNextReadyFrame_Locked();
 
   void TransitionToPrerolled_Locked();
 
   // Runs |statistics_cb_| with |frames_decoded_| and |frames_dropped_|, resets
   // them to 0, and then waits on |frame_available_| for up to the
   // |wait_duration|.
   void UpdateStatsAndWait_Locked(base::TimeDelta wait_duration);
 
-  scoped_refptr<base::MessageLoopProxy> message_loop_;
+  scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
   base::WeakPtrFactory<VideoRendererBase> weak_factory_;
   base::WeakPtr<VideoRendererBase> weak_this_;
 
   // Used for accessing data members.
   base::Lock lock_;
 
   // Provides video frames to VideoRendererBase.
   VideoFrameStream video_frame_stream_;
 
   // Queue of incoming frames yet to be painted.
@@ skipping 97 matching lines @@
   // last call to |statistics_cb_|. These must be accessed under lock.
   int frames_decoded_;
   int frames_dropped_;
 
   DISALLOW_COPY_AND_ASSIGN(VideoRendererBase);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_FILTERS_VIDEO_RENDERER_BASE_H_