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

webrtc/base/logsinks.cc

 /*
  *  Copyright 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 11 matching lines @@
                                          size_t max_log_size,
                                          size_t num_log_files)
     : FileRotatingLogSink(new FileRotatingStream(log_dir_path,
                                                  log_prefix,
                                                  max_log_size,
                                                  num_log_files)) {
 }
 
 FileRotatingLogSink::FileRotatingLogSink(FileRotatingStream* stream)
     : stream_(stream) {
-  DCHECK(stream);
+  RTC_DCHECK(stream);
 }
 
 FileRotatingLogSink::~FileRotatingLogSink() {
 }
 
 void FileRotatingLogSink::OnLogMessage(const std::string& message) {
   if (stream_->GetState() != SS_OPEN) {
     std::cerr << "Init() must be called before adding this sink." << std::endl;
     return;
   }
@@ skipping 12 matching lines @@
     const std::string& log_dir_path,
     size_t max_total_log_size)
     : FileRotatingLogSink(
           new CallSessionFileRotatingStream(log_dir_path, max_total_log_size)) {
 }
 
 CallSessionFileRotatingLogSink::~CallSessionFileRotatingLogSink() {
 }
 
 }  // namespace rtc