Implement core of compliant MediaSource coded frame processing

media/filters/legacy_frame_processor.cc

Index: media/filters/legacy_frame_processor.cc
diff --git a/media/filters/legacy_frame_processor.cc b/media/filters/legacy_frame_processor.cc
index 71c280183f2d2f74026d89dae8074f23737c5c44..d63f25d92b4b176d6c3782a693474fa65628d158 100644
--- a/media/filters/legacy_frame_processor.cc
+++ b/media/filters/legacy_frame_processor.cc
@@ -26,6 +26,13 @@ void LegacyFrameProcessor::SetSequenceMode(bool sequence_mode) {
   sequence_mode_ = sequence_mode;
 }
 
+void LegacyFrameProcessor::SetGroupStartTimestampIfInSequenceMode(
+    base::TimeDelta timestamp_offset) {
+  DVLOG(2) << __FUNCTION__ << "(" << timestamp_offset.InSecondsF() << ")";
+  // Legacy frame processor does not support sequence mode nor does it observe
+  // a group start timestamp.
+}
+
 bool LegacyFrameProcessor::ProcessFrames(
     const StreamParser::BufferQueue& audio_buffers,
     const StreamParser::BufferQueue& video_buffers,
@@ -50,10 +57,6 @@ bool LegacyFrameProcessor::ProcessFrames(
   MseTrackBuffer* video_track = FindTrack(kVideoTrackId);
   DCHECK(video_buffers.empty() || video_track);
 
-  // TODO(wolenetz): DCHECK + return false if any of these buffers have UNKNOWN
-  // type() in upcoming coded frame processing compliant implementation. See
-  // http://crbug.com/249422.
-
   StreamParser::BufferQueue filtered_audio;
   StreamParser::BufferQueue filtered_video;
   StreamParser::TextBufferQueueMap filtered_text;
@@ -110,13 +113,8 @@ bool LegacyFrameProcessor::ProcessFrames(
     }
 
     *new_media_segment = false;
-
     DCHECK(segment_timestamp != kInfiniteDuration());
-    for (TrackBufferMap::iterator itr = track_buffers_.begin();
-         itr != track_buffers_.end();
-         ++itr) {
-      itr->second->stream()->OnNewMediaSegment(segment_timestamp);
-    }
+    NotifyNewMediaSegmentStarting(segment_timestamp);
   }
 
   if (!filtered_audio.empty() &&