Make header include guards great again

runtime/vm/instructions_x64.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.
 // Classes that describe assembly patterns as used by inline caches.
 
-#ifndef VM_INSTRUCTIONS_X64_H_
-#define VM_INSTRUCTIONS_X64_H_
+#ifndef RUNTIME_VM_INSTRUCTIONS_X64_H_
+#define RUNTIME_VM_INSTRUCTIONS_X64_H_
 
-#ifndef VM_INSTRUCTIONS_H_
+#ifndef RUNTIME_VM_INSTRUCTIONS_H_
 #error Do not include instructions_ia32.h directly; use instructions.h instead.
 #endif
 
 #include "vm/allocation.h"
 #include "vm/object.h"
 
 namespace dart {
 
 // Forward declarations.
 class RawClass;
@@ skipping 94 matching lines @@
   }
 
   static int pattern_length_in_bytes() { return kLengthInBytes; }
 
  private:
   static const int kLengthInBytes = 3;
 };
 
 }  // namespace dart
 
-#endif  // VM_INSTRUCTIONS_X64_H_
+#endif  // RUNTIME_VM_INSTRUCTIONS_X64_H_