Make header include guards great again

runtime/vm/version.h

Index: runtime/vm/version.h
diff --git a/runtime/vm/version.h b/runtime/vm/version.h
index 45afcb5964a598f6d4dd1ecda15902fa929786d8..2acf205e5c482c2d86b217427bb7380503cd7c79 100644
--- a/runtime/vm/version.h
+++ b/runtime/vm/version.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_VERSION_H_
-#define VM_VERSION_H_
+#ifndef RUNTIME_VM_VERSION_H_
+#define RUNTIME_VM_VERSION_H_
 
 #include "vm/allocation.h"
 
@@ -21,4 +21,4 @@ class Version : public AllStatic {
 
 }  // namespace dart
 
-#endif  // VM_VERSION_H_
+#endif  // RUNTIME_VM_VERSION_H_