MSE: Experimental support for new abort and duration behavior

media/filters/chunk_demuxer.cc

Index: media/filters/chunk_demuxer.cc
diff --git a/media/filters/chunk_demuxer.cc b/media/filters/chunk_demuxer.cc
index 49836a129e580d085c1ca956ac27d7c5ac3bea90..e7525b4191891c5b1c34d53b023cffb21eb9f611 100644
--- a/media/filters/chunk_demuxer.cc
+++ b/media/filters/chunk_demuxer.cc
@@ -157,6 +157,10 @@ Ranges<TimeDelta> ChunkDemuxerStream::GetBufferedRanges(
   return range.IntersectionWith(valid_time_range);
 }
 
+TimeDelta ChunkDemuxerStream::GetHighestPresentationTimestamp() const {
+  return stream_->GetHighestPresentationTimestamp();
+}
+
 TimeDelta ChunkDemuxerStream::GetBufferedDuration() const {
   return stream_->GetBufferedDuration();
 }
@@ -593,6 +597,17 @@ Ranges<TimeDelta> ChunkDemuxer::GetBufferedRanges(const std::string& id) const {
   return itr->second->GetBufferedRanges(duration_, state_ == ENDED);
 }
 
+base::TimeDelta ChunkDemuxer::GetHighestPresentationTimestamp(
+    const std::string& id) const {
+  base::AutoLock auto_lock(lock_);
+  DCHECK(!id.empty());
+
+  MediaSourceStateMap::const_iterator itr = source_state_map_.find(id);
+
+  DCHECK(itr != source_state_map_.end());
+  return itr->second->GetHighestPresentationTimestamp();
+}
+
 bool ChunkDemuxer::EvictCodedFrames(const std::string& id,
                                     base::TimeDelta currentMediaTime,
                                     size_t newDataSize) {