Add VideoCodec::PreferDecodeLate

webrtc/modules/video_coding/main/source/generic_decoder.cc

 /*
  *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 177 matching lines @@
 {
     _callback = callback;
     return _decoder.RegisterDecodeCompleteCallback(callback);
 }
 
 bool VCMGenericDecoder::External() const
 {
     return _isExternal;
 }
 
+bool VCMGenericDecoder::HasOnlyOneOutputBuffer()  const {
+  return _decoder.HasOnlyOneOutputBuffer();
+}
+
 }  // namespace