Protect Update{Audio|Video}Config() by lock in ChunkDemuxerStream.

media/filters/chunk_demuxer.cc

 // 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.
 
 #include "media/filters/chunk_demuxer.h"
 
 #include <algorithm>
 #include <deque>
 
 #include "base/bind.h"
@@ skipping 343 matching lines @@
   // This can be done by intersecting the stream's range with the valid time
   // range.
   Ranges<TimeDelta> valid_time_range;
   valid_time_range.Add(range.start(0), duration);
   return range.IntersectionWith(valid_time_range);
 }
 
 bool ChunkDemuxerStream::UpdateAudioConfig(const AudioDecoderConfig& config) {
   DCHECK(config.IsValidConfig());
   DCHECK_EQ(type_, AUDIO);
+  base::AutoLock auto_lock(lock_);
   return stream_->UpdateAudioConfig(config);
 }
 
 bool ChunkDemuxerStream::UpdateVideoConfig(const VideoDecoderConfig& config) {
   DCHECK(config.IsValidConfig());
   DCHECK_EQ(type_, VIDEO);
+  base::AutoLock auto_lock(lock_);
   return stream_->UpdateVideoConfig(config);
 }
 
 void ChunkDemuxerStream::EndOfStream() {
   ClosureQueue closures;
   {
     base::AutoLock auto_lock(lock_);
     DCHECK(!end_of_stream_);
     DCHECK(stream_->IsEndSelected());
     end_of_stream_ = true;
@@ skipping 807 matching lines @@
 
 Ranges<TimeDelta> ChunkDemuxer::GetBufferedRanges() const {
   if (audio_ && !video_)
     return audio_->GetBufferedRanges(duration_);
   else if (!audio_ && video_)
     return video_->GetBufferedRanges(duration_);
   return ComputeIntersection();
 }
 
 }  // namespace media