Make header include guards great again

runtime/vm/parser.h

Index: runtime/vm/parser.h
diff --git a/runtime/vm/parser.h b/runtime/vm/parser.h
index 0b37e121b48a907f4df1aa7d54ae671e55646b50..b7c7b14a3329cf8c33e124bc8639abfc3f48402d 100644
--- a/runtime/vm/parser.h
+++ b/runtime/vm/parser.h
@@ -2,8 +2,8 @@
 // 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_PARSER_H_
-#define VM_PARSER_H_
+#ifndef RUNTIME_VM_PARSER_H_
+#define RUNTIME_VM_PARSER_H_
 
 #include "include/dart_api.h"
 
@@ -995,4 +995,4 @@ class Parser : public ValueObject {
 
 }  // namespace dart
 
-#endif  // VM_PARSER_H_
+#endif  // RUNTIME_VM_PARSER_H_