content/child: Remove use of MessageLoopProxy and deprecated MessageLoop APIs

content/renderer/media/video_track_adapter.h

 // Copyright 2014 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 CONTENT_RENDERER_MEDIA_VIDEO_TRACK_ADAPTER_H_
 #define CONTENT_RENDERER_MEDIA_VIDEO_TRACK_ADAPTER_H_
 
 #include <vector>
 
 #include "base/macros.h"
@@ skipping 12 matching lines @@
 // Video frames are delivered to a track using a VideoCaptureDeliverFrameCB on
 // the IO-thread.
 // Adaptations is done by wrapping the original media::VideoFrame in a new
 // media::VideoFrame with a new visible_rect and natural_size.
 class VideoTrackAdapter
     : public base::RefCountedThreadSafe<VideoTrackAdapter> {
  public:
   typedef base::Callback<void(bool mute_state)> OnMutedCallback;
 
   explicit VideoTrackAdapter(
-      const scoped_refptr<base::MessageLoopProxy>& io_message_loop);
+      scoped_refptr<base::SingleThreadTaskRunner> io_task_runner);
 
   // Register |track| to receive video frames in |frame_callback| with
   // a resolution within the boundaries of the arguments.
   // Must be called on the main render thread. |frame_callback| is guaranteed to
   // be released on the main render thread.
   // |source_frame_rate| is used to calculate a prudent interval to check for
   // passing frames and inform of the result via |on_muted_state_callback|.
   void AddTrack(const MediaStreamVideoTrack* track,
                 VideoCaptureDeliverFrameCB frame_callback,
                 int max_width, int max_height,
                 double min_aspect_ratio,
                 double max_aspect_ratio,
                 double max_frame_rate);
   void RemoveTrack(const MediaStreamVideoTrack* track);
 
   // Delivers |frame| to all tracks that have registered a callback.
   // Must be called on the IO-thread.
   void DeliverFrameOnIO(
       const scoped_refptr<media::VideoFrame>& frame,
       const base::TimeTicks& estimated_capture_time);
 
-  const scoped_refptr<base::MessageLoopProxy>& io_message_loop() {
+  base::SingleThreadTaskRunner* io_task_runner() const {
     DCHECK(thread_checker_.CalledOnValidThread());
-    return io_message_loop_;
+    return io_task_runner_.get();
   }
 
   // Start monitor that frames are delivered to this object. I.E, that
   // |DeliverFrameOnIO| is called with a frame rate of |source_frame_rate|.
   // |on_muted_callback| is triggered on the main render thread.
   void StartFrameMonitoring(double source_frame_rate,
                             const OnMutedCallback& on_muted_callback);
   void StopFrameMonitoring();
 
  private:
@@ skipping 15 matching lines @@
   void StopFrameMonitoringOnIO();
 
   // Compare |frame_counter_snapshot| with the current |frame_counter_|, and
   // inform of the situation (muted, not muted) via |set_muted_state_callback|.
   void CheckFramesReceivedOnIO(const OnMutedCallback& set_muted_state_callback,
                                uint64 old_frame_counter_snapshot);
 
   // |thread_checker_| is bound to the main render thread.
   base::ThreadChecker thread_checker_;
 
-  const scoped_refptr<base::MessageLoopProxy> io_message_loop_;
+  const scoped_refptr<base::SingleThreadTaskRunner> io_task_runner_;
 
   // |renderer_task_runner_| is used to ensure that
   // VideoCaptureDeliverFrameCB is released on the main render thread.
   const scoped_refptr<base::SingleThreadTaskRunner> renderer_task_runner_;
 
   // VideoFrameResolutionAdapter is an inner class that is created on the main
   // render thread but operates on the IO-thread. It does the resolution
   // adaptation and delivers frames to all registered tracks on the IO-thread.
   class VideoFrameResolutionAdapter;
   typedef std::vector<scoped_refptr<VideoFrameResolutionAdapter> >
@@ skipping 13 matching lines @@
 
   // Frame rate configured on the video source, accessed on the IO-thread.
   float source_frame_rate_;
 
   DISALLOW_COPY_AND_ASSIGN(VideoTrackAdapter);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_VIDEO_TRACK_ADAPTER_H_