Add RTC_ prefix to contructormagic macros.

webrtc/system_wrappers/interface/atomic32.h

 /*
  *  Copyright (c) 2012 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 38 matching lines @@
   // Disable the + and - operator since it's unclear what these operations
   // should do.
   Atomic32 operator+(const Atomic32& other);
   Atomic32 operator-(const Atomic32& other);
 
   // Checks if |_value| is 32bit aligned.
   inline bool Is32bitAligned() const {
     return (reinterpret_cast<ptrdiff_t>(&value_) & 3) == 0;
   }
 
-  DISALLOW_COPY_AND_ASSIGN(Atomic32);
+  RTC_DISALLOW_COPY_AND_ASSIGN(Atomic32);
 
   int32_t value_;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_SYSTEM_WRAPPERS_INTERFACE_ATOMIC32_H_