Add config change support to FFmpegVideoDecoder

media/mp4/mp4_stream_parser.cc

Index: media/mp4/mp4_stream_parser.cc
diff --git a/media/mp4/mp4_stream_parser.cc b/media/mp4/mp4_stream_parser.cc
index ebaa2a2b4af6f40a3637fa6ca33d77a04265827a..688b8c53ee2c8fe5492aa87414d0483adc7114d2 100644
--- a/media/mp4/mp4_stream_parser.cc
+++ b/media/mp4/mp4_stream_parser.cc
@@ -200,12 +200,7 @@ bool MP4StreamParser::ParseMoov(BoxReader* reader) {
     }
   }
 
-  // TODO(strobe): For now, we avoid sending new configs on a new
-  // reinitialization segment, and instead simply embed the updated parameter
-  // sets into the video stream. The conditional should be removed when
-  // http://crbug.com/122913 is fixed.
-  if (!init_cb_.is_null())
-    RCHECK(config_cb_.Run(audio_config, video_config));
+  RCHECK(config_cb_.Run(audio_config, video_config));
 
   base::TimeDelta duration;
   if (moov_->extends.header.fragment_duration > 0) {