Add RTC_ prefix to contructormagic macros.

webrtc/common.h

 /*
  *  Copyright (c) 2013 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 77 matching lines @@
   // locks.
   template<typename T>
   static const T& default_value() {
     RTC_DEFINE_STATIC_LOCAL(const T, def, ());
     return def;
   }
 
   typedef std::map<OptionIdentifier, BaseOption*> OptionMap;
   OptionMap options_;
 
-  // DISALLOW_COPY_AND_ASSIGN
+  // RTC_DISALLOW_COPY_AND_ASSIGN
   Config(const Config&);
   void operator=(const Config&);
 };
 
 template<typename T>
 const T& Config::Get() const {
   OptionMap::const_iterator it = options_.find(identifier<T>());
   if (it != options_.end()) {
     const T* t = static_cast<Option<T>*>(it->second)->value;
     if (t) {
       return *t;
     }
   }
   return default_value<T>();
 }
 
 template<typename T>
 void Config::Set(T* value) {
   BaseOption*& it = options_[identifier<T>()];
   delete it;
   it = new Option<T>(value);
 }
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_COMMON_H_