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

webrtc/modules/video_coding/codecs/h264/h264.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 18 matching lines @@
 
 bool IsH264CodecSupported() {
 #if defined(WEBRTC_IOS)
   return IsH264CodecSupportedObjC();
 #else
   return false;
 #endif
 }
 
 H264Encoder* H264Encoder::Create() {
-  DCHECK(H264Encoder::IsSupported());
+  RTC_DCHECK(H264Encoder::IsSupported());
 #if defined(WEBRTC_IOS) && defined(WEBRTC_VIDEO_TOOLBOX_SUPPORTED)
   return new H264VideoToolboxEncoder();
 #else
   RTC_NOTREACHED();
   return nullptr;
 #endif
 }
 
 bool H264Encoder::IsSupported() {
   return IsH264CodecSupported();
 }
 
 H264Decoder* H264Decoder::Create() {
-  DCHECK(H264Decoder::IsSupported());
+  RTC_DCHECK(H264Decoder::IsSupported());
 #if defined(WEBRTC_IOS) && defined(WEBRTC_VIDEO_TOOLBOX_SUPPORTED)
   return new H264VideoToolboxDecoder();
 #else
   RTC_NOTREACHED();
   return nullptr;
 #endif
 }
 
 bool H264Decoder::IsSupported() {
   return IsH264CodecSupported();
 }
 
 }  // namespace webrtc