Make header include guards great again

runtime/vm/aot_optimizer.h

Index: runtime/vm/aot_optimizer.h
diff --git a/runtime/vm/aot_optimizer.h b/runtime/vm/aot_optimizer.h
index bfe978ac7a55a0dd099b32d8b9149ea0425b8094..01a81ca2e8491c244f9e475e05442a49dbd915dc 100644
--- a/runtime/vm/aot_optimizer.h
+++ b/runtime/vm/aot_optimizer.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_AOT_OPTIMIZER_H_
-#define VM_AOT_OPTIMIZER_H_
+#ifndef RUNTIME_VM_AOT_OPTIMIZER_H_
+#define RUNTIME_VM_AOT_OPTIMIZER_H_
 
 #include "vm/intermediate_language.h"
 #include "vm/flow_graph.h"
@@ -152,4 +152,4 @@ class AotOptimizer : public FlowGraphVisitor {
 
 }  // namespace dart
 
-#endif  // VM_AOT_OPTIMIZER_H_
+#endif  // RUNTIME_VM_AOT_OPTIMIZER_H_