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

media/filters/video_renderer_base.h

Index: media/filters/video_renderer_base.h
diff --git a/media/filters/video_renderer_base.h b/media/filters/video_renderer_base.h
index 41e5e3968c1c15b14f1ce445a954315001cf61e2..188681fec4e6eca8f9190053b0d16188818047e1 100644
--- a/media/filters/video_renderer_base.h
+++ b/media/filters/video_renderer_base.h
@@ -22,7 +22,7 @@
 #include "media/filters/video_frame_stream.h"
 
 namespace base {
-class MessageLoopProxy;
+class SingleThreadTaskRunner;
 }
 
 namespace media {
@@ -54,12 +54,13 @@ class MEDIA_EXPORT VideoRendererBase
   // 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.
@@ -134,7 +135,7 @@ class MEDIA_EXPORT VideoRendererBase
   // |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_;