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

talk/app/webrtc/datachannelinterface.h

 /*
  * libjingle
  * Copyright 2012 Google Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  *  1. Redistributions of source code must retain the above copyright notice,
  *     this list of conditions and the following disclaimer.
  *  2. Redistributions in binary form must reproduce the above copyright notice,
@@ skipping 102 matching lines @@
     switch (state) {
       case kConnecting:
         return "connecting";
       case kOpen:
         return "open";
       case kClosing:
         return "closing";
       case kClosed:
         return "closed";
     }
-    CHECK(false) << "Unknown DataChannel state: " << state;
+    RTC_CHECK(false) << "Unknown DataChannel state: " << state;
     return "";
   }
 
   virtual void RegisterObserver(DataChannelObserver* observer) = 0;
   virtual void UnregisterObserver() = 0;
   // The label attribute represents a label that can be used to distinguish this
   // DataChannel object from other DataChannel objects.
   virtual std::string label() const = 0;
   virtual bool reliable() const = 0;
 
@@ skipping 16 matching lines @@
   // Sends |data| to the remote peer.
   virtual bool Send(const DataBuffer& buffer) = 0;
 
  protected:
   virtual ~DataChannelInterface() {}
 };
 
 }  // namespace webrtc
 
 #endif  // TALK_APP_WEBRTC_DATACHANNELINTERFACE_H_