Remove WrapperWorldType from V8 binding

Source/bindings/v8/V8Binding.h

 /*
 * Copyright (C) 2009 Google Inc. All rights reserved.
 * Copyright (C) 2012 Ericsson AB. 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.
@@ skipping 617 matching lines @@
     }
 
     V8TRYCATCH(uint32_t, sequenceLength, lengthValue->Int32Value());
     length = sequenceLength;
     return v8Value;
 }
 
 v8::Isolate* toIsolate(ExecutionContext*);
 v8::Isolate* toIsolate(LocalFrame*);
 
-WrapperWorldType worldType(v8::Isolate*);
-WrapperWorldType worldTypeInMainThread(v8::Isolate*);
-
 DOMWindow* toDOMWindow(v8::Handle<v8::Value>, v8::Isolate*);
 DOMWindow* toDOMWindow(v8::Handle<v8::Context>);
 ExecutionContext* toExecutionContext(v8::Handle<v8::Context>);
 
 DOMWindow* callingDOMWindow(v8::Isolate*);
 ExecutionContext* callingExecutionContext(v8::Isolate*);
 DOMWindow* enteredDOMWindow(v8::Isolate*);
 Document* currentDocument(v8::Isolate*);
 ExecutionContext* currentExecutionContext(v8::Isolate*);
 
@@ skipping 93 matching lines @@
     v8::HandleScope m_handleScope;
     v8::Handle<v8::Context> m_context;
     v8::Context::Scope m_contextScope;
     RefPtr<DOMWrapperWorld> m_world;
     OwnPtr<V8PerContextData> m_perContextData;
 };
 
 } // namespace WebCore
 
 #endif // V8Binding_h