Make header include guards great again

runtime/vm/token_position.h

 // Copyright (c) 2016, 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_TOKEN_POSITION_H_
-#define VM_TOKEN_POSITION_H_
+#ifndef RUNTIME_VM_TOKEN_POSITION_H_
+#define RUNTIME_VM_TOKEN_POSITION_H_
 
 #include "platform/utils.h"
 #include "vm/allocation.h"
 
 namespace dart {
 
 // The token space is organized as follows:
 //
 // Sentinel values start at -1 and move towards negative infinity:
 // kNoSourcePos                -> -1
@@ skipping 181 matching lines @@
   const char* ToCString() const;
 
  private:
   int32_t value_;
 
   DISALLOW_ALLOCATION();
 };
 
 }  // namespace dart
 
-#endif  // VM_TOKEN_POSITION_H_
+#endif  // RUNTIME_VM_TOKEN_POSITION_H_