Introduce DecodeTimestamp class to make it easier to distiguish presentation and decode timestamps.

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 <limits>
 #include <list>
 
@@ skipping 836 matching lines @@
   // range.
   Ranges<TimeDelta> valid_time_range;
   valid_time_range.Add(range.start(0), duration);
   return range.IntersectionWith(valid_time_range);
 }
 
 TimeDelta ChunkDemuxerStream::GetBufferedDuration() const {
   return stream_->GetBufferedDuration();
 }
 
-void ChunkDemuxerStream::OnNewMediaSegment(TimeDelta start_timestamp) {
+void ChunkDemuxerStream::OnNewMediaSegment(DecodeTimestamp start_timestamp) {
   DVLOG(2) << "ChunkDemuxerStream::OnNewMediaSegment("
            << start_timestamp.InSecondsF() << ")";
   base::AutoLock auto_lock(lock_);
   stream_->OnNewMediaSegment(start_timestamp);
 }
 
 bool ChunkDemuxerStream::UpdateAudioConfig(const AudioDecoderConfig& config,
                                            const LogCB& log_cb) {
   DCHECK(config.IsValidConfig());
   DCHECK_EQ(type_, AUDIO);
@@ skipping 885 matching lines @@
 }
 
 void ChunkDemuxer::ShutdownAllStreams() {
   for (SourceStateMap::iterator itr = source_state_map_.begin();
        itr != source_state_map_.end(); ++itr) {
     itr->second->Shutdown();
   }
 }
 
 }  // namespace media