libvpx: Pull from upstream

source/libvpx/third_party/libwebm/mkvmuxer.hpp

 // Copyright (c) 2012 The WebM 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.
 
 #ifndef MKVMUXER_HPP
 #define MKVMUXER_HPP
@@ skipping 510 matching lines @@
 
   LIBWEBM_DISALLOW_COPY_AND_ASSIGN(AudioTrack);
 };
 
 ///////////////////////////////////////////////////////////////
 // Tracks element
 class Tracks {
  public:
   // Audio and video type defined by the Matroska specs.
   enum { kVideo = 0x1, kAudio = 0x2 };
-  // Opus, Vorbis, VP8, and VP9 codec ids defined by the Matroska specs.
+
   static const char kOpusCodecId[];
   static const char kVorbisCodecId[];
   static const char kVp8CodecId[];
   static const char kVp9CodecId[];
   static const char kVp10CodecId[];
 
   Tracks();
   ~Tracks();
 
   // Adds a Track element to the Tracks object. |track| will be owned and
@@ skipping 941 matching lines @@
   IMkvWriter* writer_cluster_;
   IMkvWriter* writer_cues_;
   IMkvWriter* writer_header_;
 
   LIBWEBM_DISALLOW_COPY_AND_ASSIGN(Segment);
 };
 
 }  // end namespace mkvmuxer
 
 #endif  // MKVMUXER_HPP