Make header include guards great again

runtime/bin/eventhandler_fuchsia.h

 // Copyright (c) 2016, 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_FUCHSIA_H_
-#define BIN_EVENTHANDLER_FUCHSIA_H_
+#ifndef RUNTIME_BIN_EVENTHANDLER_FUCHSIA_H_
+#define RUNTIME_BIN_EVENTHANDLER_FUCHSIA_H_
 
-#if !defined(BIN_EVENTHANDLER_H_)
+#if !defined(RUNTIME_BIN_EVENTHANDLER_H_)
 #error Do not include eventhandler_fuchsia.h directly; use eventhandler.h instead.
 #endif
 
 #include <errno.h>
 #include <magenta/syscalls.h>
 
 #include "platform/signal_blocker.h"
 
 namespace dart {
 namespace bin {
@@ skipping 90 matching lines @@
   mx_handle_t interrupt_handles_[2];
 
   MagentaWaitManyInfo info_;
 
   DISALLOW_COPY_AND_ASSIGN(EventHandlerImplementation);
 };
 
 }  // namespace bin
 }  // namespace dart
 
-#endif  // BIN_EVENTHANDLER_FUCHSIA_H_
+#endif  // RUNTIME_BIN_EVENTHANDLER_FUCHSIA_H_