| Index: media/filters/decoder_stream.cc | 
| diff --git a/media/filters/decoder_stream.cc b/media/filters/decoder_stream.cc | 
| index 0390abe7ebc5b263ae36e1805a1a6c3bd6ad7111..2863d228eb526538cf48b3cf2b4edd830f39a2d4 100644 | 
| --- a/media/filters/decoder_stream.cc | 
| +++ b/media/filters/decoder_stream.cc | 
| @@ -376,6 +376,10 @@ void DecoderStream<StreamType>::OnBufferReady( | 
| if (status == DemuxerStream::kConfigChanged) { | 
| FUNCTION_DVLOG(2) << ": " << "ConfigChanged"; | 
| DCHECK(stream_->SupportsConfigChanges()); | 
| + | 
| +    if (!config_change_observer_cb_.is_null()) | 
| +      config_change_observer_cb_.Run(); | 
| + | 
| state_ = STATE_FLUSHING_DECODER; | 
| if (!reset_cb_.is_null()) { | 
| AbortRead(); | 
|  |