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

media/formats/mp2t/mp2t_stream_parser_unittest.cc

Index: media/formats/mp2t/mp2t_stream_parser_unittest.cc
diff --git a/media/formats/mp2t/mp2t_stream_parser_unittest.cc b/media/formats/mp2t/mp2t_stream_parser_unittest.cc
index ab1d2306290c56d6670d4fbe09b2d947b1d4e433..0d45fd37276af175679d68d1bdee51e43fac7c07 100644
--- a/media/formats/mp2t/mp2t_stream_parser_unittest.cc
+++ b/media/formats/mp2t/mp2t_stream_parser_unittest.cc
@@ -186,8 +186,9 @@ class Mp2tStreamParserTest : public testing::Test {
     segment_count_++;
   }
 
-  void OnEndOfSegment() {
+  bool OnEndOfSegment() {
     NOTREACHED() << "OnEndOfSegment not expected in the Mpeg2 TS parser";
+    return false;
   }
 
   void InitializeParser() {