Make header include guards great again

runtime/bin/eventhandler.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 BIN_EVENTHANDLER_H_
-#define BIN_EVENTHANDLER_H_
+#ifndef RUNTIME_BIN_EVENTHANDLER_H_
+#define RUNTIME_BIN_EVENTHANDLER_H_
 
 #include "bin/builtin.h"
 #include "bin/dartutils.h"
 #include "bin/isolate_data.h"
 
 #include "platform/hashmap.h"
 
 namespace dart {
 namespace bin {
 
@@ skipping 645 matching lines @@
  private:
   friend class EventHandlerImplementation;
   EventHandlerImplementation delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(EventHandler);
 };
 
 }  // namespace bin
 }  // namespace dart
 
-#endif  // BIN_EVENTHANDLER_H_
+#endif  // RUNTIME_BIN_EVENTHANDLER_H_