Make header include guards great again

runtime/vm/code_descriptors.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_CODE_DESCRIPTORS_H_
-#define VM_CODE_DESCRIPTORS_H_
+#ifndef RUNTIME_VM_CODE_DESCRIPTORS_H_
+#define RUNTIME_VM_CODE_DESCRIPTORS_H_
 
 #include "vm/ast.h"
 #include "vm/code_generator.h"
 #include "vm/globals.h"
 #include "vm/growable_array.h"
 #include "vm/object.h"
 
 namespace dart {
 
 class DescriptorList : public ZoneAllocated {
@@ skipping 141 matching lines @@
 
   RawExceptionHandlers* FinalizeExceptionHandlers(uword entry_point) const;
 
  private:
   GrowableArray<struct HandlerDesc> list_;
   DISALLOW_COPY_AND_ASSIGN(ExceptionHandlerList);
 };
 
 }  // namespace dart
 
-#endif  // VM_CODE_DESCRIPTORS_H_
+#endif  // RUNTIME_VM_CODE_DESCRIPTORS_H_