Make header include guards great again

runtime/vm/cha.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_CHA_H_
-#define VM_CHA_H_
+#ifndef RUNTIME_VM_CHA_H_
+#define RUNTIME_VM_CHA_H_
 
 #include "vm/allocation.h"
 #include "vm/growable_array.h"
 #include "vm/thread.h"
 
 namespace dart {
 
 class Class;
 class Function;
 template <typename T> class ZoneGrowableArray;
@@ skipping 61 matching lines @@
     // any subclasses were added we will discard compiled code.
     intptr_t subclass_count;
   };
 
   GrowableArray<GuardedClassInfo> guarded_classes_;
   CHA* previous_;
 };
 
 }  // namespace dart
 
-#endif  // VM_CHA_H_
+#endif  // RUNTIME_VM_CHA_H_