Cosmetic change to the handle dereference check.

src/handles.h

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 67 matching lines @@
   }
 
   static Handle<T> null() { return Handle<T>(); }
   bool is_null() const { return location_ == NULL; }
 
   // Closes the given scope, but lets this handle escape. See
   // implementation in api.h.
   inline Handle<T> EscapeFrom(v8::HandleScope* scope);
 
 #ifdef DEBUG
-  bool IsDereferenceAllowed(bool explicitly_allow_deferred) const;
+  enum DereferenceCheckMode { INCLUDE_DEFERRED_CHECK, NO_DEFERRED_CHECK };
+
+  bool IsDereferenceAllowed(DereferenceCheckMode mode) const;
 #endif  // DEBUG
 
  private:
   T** location_;
 
   // Handles of different classes are allowed to access each other's location_.
   template<class S> friend class Handle;
 };
 
 
@@ skipping 245 matching lines @@
  private:
   Isolate* isolate_;
   Object** limit_;
   int level_;
 #endif
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_HANDLES_H_