Make wrapperTypeInfo static member const in bindings classes

Source/bindings/v8/ScriptWrappable.h

 /*
  * Copyright (C) 2010 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 176 matching lines @@
     //   If the bottom bit it set, then this contains a pointer to a wrapper object in the remainging bits.
     //   If the bottom bit is clear, then this contains a pointer to the wrapper type info in the remaining bits.
     uintptr_t m_wrapperOrTypeInfo;
 
     static void makeWeakCallback(v8::Isolate* isolate, v8::Persistent<v8::Object>* wrapper, ScriptWrappable* key)
     {
         ASSERT(*(key->unsafePersistent().persistent()) == *wrapper);
 
         // Note: |object| might not be equal to |key|, e.g., if ScriptWrappable isn't a left-most base class.
         void* object = toNative(*wrapper);
-        WrapperTypeInfo* info = toWrapperTypeInfo(*wrapper);
+        const WrapperTypeInfo* info = toWrapperTypeInfo(*wrapper);
         ASSERT(info->derefObjectFunction);
 
         key->disposeWrapper(wrapper, info);
         // FIXME: I noticed that 50%~ of minor GC cycle times can be consumed
         // inside key->deref(), which causes Node destructions. We should
         // make Node destructions incremental.
         info->derefObject(object);
     }
 };
 
 } // namespace WebCore
 
 #endif // ScriptWrappable_h