Pass in media message loop to VideoRendererBase and enforce calling on the right thread.

media/filters/decrypting_video_decoder.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_DECRYPTING_VIDEO_DECODER_H_
 #define MEDIA_FILTERS_DECRYPTING_VIDEO_DECODER_H_
 
 #include "base/callback.h"
 #include "base/memory/ref_counted.h"
 #include "media/base/decryptor.h"
@@ skipping 56 matching lines @@
     kDecryptorRequested,
     kPendingDecoderInit,
     kIdle,
     kPendingDemuxerRead,
     kPendingDecode,
     kWaitingForKey,
     kDecodeFinished,
     kStopped
   };
 
-  // Carries out the initialization operation scheduled by Initialize().
-  void DoInitialize(const scoped_refptr<DemuxerStream>& stream,
-                    const PipelineStatusCB& status_cb,
-                    const StatisticsCB& statistics_cb);
-
   // Callback for DecryptorHost::RequestDecryptor().
   void SetDecryptor(Decryptor* decryptor);
 
   // Callback for Decryptor::InitializeVideoDecoder().
   void FinishInitialization(bool success);
 
-  // Carries out the buffer reading operation scheduled by Read().
-  void DoRead(const ReadCB& read_cb);
-
   void ReadFromDemuxerStream();
 
   // Callback for DemuxerStream::Read().
-  void DoDecryptAndDecodeBuffer(DemuxerStream::Status status,
-                                const scoped_refptr<DecoderBuffer>& buffer);
+  void DecryptAndDecodeBuffer(DemuxerStream::Status status,
+                              const scoped_refptr<DecoderBuffer>& buffer);
 
   void DecodePendingBuffer();
 
   // Callback for Decryptor::DecryptAndDecodeVideo().
   void DeliverFrame(int buffer_size,
                     Decryptor::Status status,
                     const scoped_refptr<VideoFrame>& frame);
 
-  // Carries out the frame delivery operation scheduled by DeliverFrame().
-  void DoDeliverFrame(int buffer_size,
-                      Decryptor::Status status,
-                      const scoped_refptr<VideoFrame>& frame);
-
   // Callback for the |decryptor_| to notify this object that a new key has been
   // added.
   void OnKeyAdded();
 
   // Reset decoder and call |reset_cb_|.
   void DoReset();
 
   // Free decoder resources and call |stop_cb_|.
   void DoStop();
 
@@ skipping 27 matching lines @@
   // A unique ID to trace Decryptor::DecryptAndDecodeVideo() call and the
   // matching DecryptCB call (in DoDeliverFrame()).
   uint32 trace_id_;
 
   DISALLOW_COPY_AND_ASSIGN(DecryptingVideoDecoder);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_FILTERS_DECRYPTING_VIDEO_DECODER_H_