Make header include guards great again

runtime/vm/handles.h

 // Copyright (c) 2011, 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_HANDLES_H_
-#define VM_HANDLES_H_
+#ifndef RUNTIME_VM_HANDLES_H_
+#define RUNTIME_VM_HANDLES_H_
 
 #include "vm/allocation.h"
 #include "vm/flags.h"
 #include "vm/os.h"
 
 namespace dart {
 
 // Handles are used in the Dart Virtual Machine to ensure that access
 // to dart objects in the virtual machine code is done in a
 // Garbage Collection safe manner.
@@ skipping 332 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(NoHandleScope);
 };
 #endif  // defined(DEBUG)
 
 // Macro to start a no handles scope in the code.
 #define NOHANDLESCOPE(thread)                                                  \
     dart::NoHandleScope no_vm_internal_handles_scope_(thread);
 
 }  // namespace dart
 
-#endif  // VM_HANDLES_H_
+#endif  // RUNTIME_VM_HANDLES_H_