MSE: Log a warning if muxed AV media segment has no A or has no V block

media/formats/mp4/mp4_stream_parser.cc

Index: media/formats/mp4/mp4_stream_parser.cc
diff --git a/media/formats/mp4/mp4_stream_parser.cc b/media/formats/mp4/mp4_stream_parser.cc
index ee88ea14ef1142e21a3594f33ccc36275db78b85..94fb0680e1cd3aa5bf8b05aa873dc1de8e3a11fb 100644
--- a/media/formats/mp4/mp4_stream_parser.cc
+++ b/media/formats/mp4/mp4_stream_parser.cc
@@ -54,7 +54,7 @@ void MP4StreamParser::Init(
     bool /* ignore_text_tracks */,
     const EncryptedMediaInitDataCB& encrypted_media_init_data_cb,
     const NewMediaSegmentCB& new_segment_cb,
-    const base::Closure& end_of_segment_cb,
+    const EndMediaSegmentCB& end_of_segment_cb,
     const scoped_refptr<MediaLog>& media_log) {
   DCHECK_EQ(state_, kWaitingForInit);
   DCHECK(init_cb_.is_null());
@@ -426,7 +426,10 @@ bool MP4StreamParser::EnqueueSample(BufferQueue* audio_buffers,
       return false;
 
     ChangeState(kParsingBoxes);
-    end_of_segment_cb_.Run();
+    *err = !end_of_segment_cb_.Run();
+    if (*err)
+      return false;
+
     return true;
   }