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

webrtc/base/network.cc

Index: webrtc/base/network.cc
diff --git a/webrtc/base/network.cc b/webrtc/base/network.cc
index c011c1f1f914d61e76a096b9ab6bb8521060d957..bc7d50528cfdfa58283617e5f360e8dbe65c6a0e 100644
--- a/webrtc/base/network.cc
+++ b/webrtc/base/network.cc
@@ -123,7 +123,7 @@ std::string AdapterTypeToString(AdapterType type) {
     case ADAPTER_TYPE_LOOPBACK:
       return "Loopback";
     default:
-      DCHECK(false) << "Invalid type " << type;
+      RTC_DCHECK(false) << "Invalid type " << type;
       return std::string();
   }
 }