Add RTC_ prefix to contructormagic macros.

webrtc/sound/soundoutputstreaminterface.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 46 matching lines @@
   // The first parameter is the amount of buffer space available for data to
   // be written (i.e., the maximum amount of data that can be written right now
   // with WriteSamples() without blocking).
   // The 2nd parameter is the stream that is issuing the callback.
   sigslot::signal2<size_t, SoundOutputStreamInterface *> SignalBufferSpace;
 
  protected:
   SoundOutputStreamInterface() {}
 
  private:
-  DISALLOW_COPY_AND_ASSIGN(SoundOutputStreamInterface);
+  RTC_DISALLOW_COPY_AND_ASSIGN(SoundOutputStreamInterface);
 };
 
 }  // namespace rtc
 
 #endif  // WEBRTC_SOUND_SOUNDOUTPUTSTREAMINTERFACE_H_