Add RTC_ prefix to contructormagic macros.

webrtc/base/multipart.h

 /*
  *  Copyright 2004 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 57 matching lines @@
 
   // StreamInterface Slots
   void OnEvent(StreamInterface* stream, int events, int error);
 
   std::string type_, boundary_;
   PartList parts_;
   bool adding_;
   size_t current_;  // The index into parts_ of the current read position.
   size_t position_;  // The current read position in bytes.
 
-  DISALLOW_COPY_AND_ASSIGN(MultipartStream);
+  RTC_DISALLOW_COPY_AND_ASSIGN(MultipartStream);
 };
 
 }  // namespace rtc
 
 #endif  // WEBRTC_BASE_MULTIPART_H__