Make wrapperTypeInfo static member const in bindings classes

Source/bindings/v8/DOMWrapperMap.h

 /*
  * Copyright (C) 2012 Google Inc. 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
@@ skipping 103 matching lines @@
 private:
     static void makeWeakCallback(v8::Isolate*, v8::Persistent<v8::Object>* wrapper, DOMWrapperMap<KeyType>*);
 
     v8::Isolate* m_isolate;
     MapType m_map;
 };
 
 template<>
 inline void DOMWrapperMap<void>::makeWeakCallback(v8::Isolate* isolate, v8::Persistent<v8::Object>* wrapper, DOMWrapperMap<void>* map)
 {
-    WrapperTypeInfo* type = toWrapperTypeInfo(*wrapper);
+    const WrapperTypeInfo* type = toWrapperTypeInfo(*wrapper);
     ASSERT(type->derefObjectFunction);
     void* key = static_cast<void*>(toNative(*wrapper));
     ASSERT(*(map->m_map.get(key).persistent()) == *wrapper);
     map->removeAndDispose(key);
     type->derefObject(key);
 }
 
 } // namespace WebCore
 
 #endif // DOMWrapperMap_h