MojoVideoDecoder: Plumb metadata methods.

media/base/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_BASE_VIDEO_DECODER_H_
 #define MEDIA_BASE_VIDEO_DECODER_H_
 
 #include <string>
 
 #include "base/callback.h"
@@ skipping 61 matching lines @@
   virtual void Initialize(const VideoDecoderConfig& config,
                           bool low_delay,
                           CdmContext* cdm_context,
                           const InitCB& init_cb,
                           const OutputCB& output_cb) = 0;
 
   // Requests a |buffer| to be decoded. The status of the decoder and decoded
   // frame are returned via the provided callback. Some decoders may allow
   // decoding multiple buffers in parallel. Callers should call
   // GetMaxDecodeRequests() to get number of buffers that may be decoded in
-  // parallel. Decoder must call |decode_cb| in the same order in which Decode()
-  // is called.
+  // parallel.
   //
   // Implementations guarantee that the |decode_cb| will not be called from
   // within this method, and that it will be called even if Decode() is never
   // called again.
   //
   // After decoding is finished the decoder calls |output_cb| specified in
   // Initialize() for each decoded frame. |output_cb| may be called before or
   // after |decode_cb|, including before Decode() returns.
   //
   // If |buffer| is an EOS buffer then the decoder must be flushed, i.e.
@@ skipping 20 matching lines @@
   // Returns maximum number of parallel decode requests.
   virtual int GetMaxDecodeRequests() const;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(VideoDecoder);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_BASE_VIDEO_DECODER_H_