Make header include guards great again

runtime/vm/ast_transformer.h

 // Copyright (c) 2014, 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_AST_TRANSFORMER_H_
-#define VM_AST_TRANSFORMER_H_
+#ifndef RUNTIME_VM_AST_TRANSFORMER_H_
+#define RUNTIME_VM_AST_TRANSFORMER_H_
 
 #include "platform/assert.h"
 #include "vm/ast.h"
 
 namespace dart {
 
 class Thread;
 
 // Translate an AstNode containing an expression (that itself contains one or
 // more awaits) into a sequential representation where subexpressions are
@@ skipping 53 matching lines @@
   AstNode* result_;
   LocalScope* async_temp_scope_;
 
   Thread* thread_;
 
   DISALLOW_COPY_AND_ASSIGN(AwaitTransformer);
 };
 
 }  // namespace dart
 
-#endif  // VM_AST_TRANSFORMER_H_
+#endif  // RUNTIME_VM_AST_TRANSFORMER_H_