Remove feedback mode from RTCVideoDecoder.

content/renderer/media/gpu/rtc_video_decoder.cc

Index: content/renderer/media/gpu/rtc_video_decoder.cc
diff --git a/content/renderer/media/gpu/rtc_video_decoder.cc b/content/renderer/media/gpu/rtc_video_decoder.cc
index 8564111a8c1bb3373f646011ef12b6300b766f3b..9a44d326772fdf513f6b3bdb4623e0d4f4f0365b 100644
--- a/content/renderer/media/gpu/rtc_video_decoder.cc
+++ b/content/renderer/media/gpu/rtc_video_decoder.cc
@@ -149,11 +149,6 @@ int32_t RTCVideoDecoder::InitDecode(const webrtc::VideoCodec* codecSettings,
                                     int32_t /*numberOfCores*/) {
   DVLOG(2) << "InitDecode";
   DCHECK_EQ(video_codec_type_, codecSettings->codecType);
-  if (codecSettings->codecType == webrtc::kVideoCodecVP8 &&
-      codecSettings->VP8().feedbackModeOn) {
-    LOG(ERROR) << "Feedback mode not supported";
-    return RecordInitDecodeUMA(WEBRTC_VIDEO_CODEC_ERROR);
-  }
 
   base::AutoLock auto_lock(lock_);
   if (state_ == UNINITIALIZED || state_ == DECODE_ERROR) {