Remove bad DCHECK added as part of https://codereview.webrtc.org/2452163004/

webrtc/video/video_receive_stream.cc

 /*
  *  Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 267 matching lines @@
 }
 
 bool VideoReceiveStream::DeliverRtp(const uint8_t* packet,
                                     size_t length,
                                     const PacketTime& packet_time) {
   return rtp_stream_receiver_.DeliverRtp(packet, length, packet_time);
 }
 
 bool VideoReceiveStream::OnRecoveredPacket(const uint8_t* packet,
                                            size_t length) {
-  RTC_DCHECK_RUN_ON(&worker_thread_checker_);
   return rtp_stream_receiver_.OnRecoveredPacket(packet, length);
 }
 
 void VideoReceiveStream::SetSync(Syncable* audio_syncable) {
   RTC_DCHECK_RUN_ON(&worker_thread_checker_);
   rtp_stream_sync_.ConfigureSync(audio_syncable);
 }
 
 void VideoReceiveStream::Start() {
   RTC_DCHECK_RUN_ON(&worker_thread_checker_);
@@ skipping 228 matching lines @@
       LOG(LS_WARNING) << "No decodable frame in " << kMaxWaitForFrameMs
                       << " ms, requesting keyframe.";
       RequestKeyFrame();
     }
   } else {
     video_receiver_.Decode(kMaxDecodeWaitTimeMs);
   }
 }
 }  // namespace internal
 }  // namespace webrtc