Fix possible buffer emission during an abort.

media/filters/chunk_demuxer.h

Index: media/filters/chunk_demuxer.h
diff --git a/media/filters/chunk_demuxer.h b/media/filters/chunk_demuxer.h
index c0889f661cdabe89fead53f590ee7e8ce32ea9dc..4095fee085940f8e93ce1527f6a10c6caeb79158 100644
--- a/media/filters/chunk_demuxer.h
+++ b/media/filters/chunk_demuxer.h
@@ -220,7 +220,12 @@ class MEDIA_EXPORT ChunkDemuxer : public Demuxer {
 
   // Aborts parsing the current segment and reset the parser to a state where
   // it can accept a new segment.
-  void Abort(const std::string& id);
+  // Some pending frames can be emitted during that process. These frames are
+  // applied |timestamp_offset|.
+  void Abort(const std::string& id,
+             base::TimeDelta append_window_start,
+             base::TimeDelta append_window_end,
+             base::TimeDelta* timestamp_offset);
 
   // Remove buffers between |start| and |end| for the source buffer
   // associated with |id|.