Add RTC_ prefix to (D)CHECKs and related macros.

webrtc/modules/remote_bitrate_estimator/test/packet_sender.cc

 /*
  *  Copyright (c) 2015 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 384 matching lines @@
     Packets generated = GeneratePackets(packets_to_send);
     for (Packet* packet : generated)
       in_flight_.insert(InFlight(*static_cast<MediaPacket*>(packet)));
 
     in_out->merge(generated, DereferencingComparator<Packet>);
   }
 }
 
 void TcpSender::UpdateCongestionControl(const FeedbackPacket* fb) {
   const TcpFeedback* tcp_fb = static_cast<const TcpFeedback*>(fb);
-  DCHECK(!tcp_fb->acked_packets().empty());
+  RTC_DCHECK(!tcp_fb->acked_packets().empty());
   ack_received_ = true;
 
   uint16_t expected = tcp_fb->acked_packets().back() - last_acked_seq_num_;
   uint16_t missing =
       expected - static_cast<uint16_t>(tcp_fb->acked_packets().size());
 
   for (uint16_t ack_seq_num : tcp_fb->acked_packets())
     in_flight_.erase(InFlight(ack_seq_num, clock_.TimeInMilliseconds()));
 
   if (missing > 0) {
@@ skipping 69 matching lines @@
   RecordBitrate();
 }
 
 uint32_t TcpSender::TargetBitrateKbps() {
   return bitrate_kbps_;
 }
 
 }  // namespace bwe
 }  // namespace testing
 }  // namespace webrtc