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

webrtc/modules/rtp_rtcp/source/rtcp_packet.cc

 /*
  *  Copyright (c) 2014 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 652 matching lines @@
 rtc::scoped_ptr<RawPacket> RtcpPacket::Build() const {
   size_t length = 0;
   rtc::scoped_ptr<RawPacket> packet(new RawPacket(IP_PACKET_SIZE));
 
   class PacketVerifier : public PacketReadyCallback {
    public:
     explicit PacketVerifier(RawPacket* packet)
         : called_(false), packet_(packet) {}
     virtual ~PacketVerifier() {}
     void OnPacketReady(uint8_t* data, size_t length) override {
-      CHECK(!called_) << "Fragmentation not supported.";
+      RTC_CHECK(!called_) << "Fragmentation not supported.";
       called_ = true;
       packet_->SetLength(length);
     }
 
    private:
     bool called_;
     RawPacket* const packet_;
   } verifier(packet.get());
   CreateAndAddAppended(packet->MutableBuffer(), &length, packet->BufferLength(),
                        &verifier);
@@ skipping 536 matching lines @@
   return length_;
 }
 
 void RawPacket::SetLength(size_t length) {
   assert(length <= buffer_length_);
   length_ = length;
 }
 
 }  // namespace rtcp
 }  // namespace webrtc