Make header include guards great again

runtime/vm/native_message_handler.h

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-#ifndef VM_NATIVE_MESSAGE_HANDLER_H_
-#define VM_NATIVE_MESSAGE_HANDLER_H_
+#ifndef RUNTIME_VM_NATIVE_MESSAGE_HANDLER_H_
+#define RUNTIME_VM_NATIVE_MESSAGE_HANDLER_H_
 
 #include "include/dart_api.h"
 #include "include/dart_native_api.h"
 #include "vm/message_handler.h"
 
 namespace dart {
 
 // A NativeMessageHandler accepts messages and dispatches them to
 // native C handlers.
 class NativeMessageHandler : public MessageHandler {
@@ skipping 14 matching lines @@
   // Delete this handlers when its last live port is closed.
   virtual bool OwnedByPortMap() const { return true; }
 
  private:
   char* name_;
   Dart_NativeMessageHandler func_;
 };
 
 }  // namespace dart
 
-#endif  // VM_NATIVE_MESSAGE_HANDLER_H_
+#endif  // RUNTIME_VM_NATIVE_MESSAGE_HANDLER_H_