Reduce usage of v8::Isolate::GetCurrent() in NPV8Object

Source/bindings/v8/NPV8Object.h

Index: Source/bindings/v8/NPV8Object.h
diff --git a/Source/bindings/v8/NPV8Object.h b/Source/bindings/v8/NPV8Object.h
index ad9ad84e0ddd181d4975c7d1f278ffdd903bd143..0caabbecc9fb6639544b3c1169e4663afcbe1802 100644
--- a/Source/bindings/v8/NPV8Object.h
+++ b/Source/bindings/v8/NPV8Object.h
@@ -64,13 +64,13 @@ struct PrivateIdentifier {
     bool isString;
 };
 
-NPObject* npCreateV8ScriptObject(NPP, v8::Handle<v8::Object>, DOMWindow*);
+NPObject* npCreateV8ScriptObject(NPP, v8::Handle<v8::Object>, DOMWindow*, v8::Isolate*);
 
 NPObject* v8ObjectToNPObject(v8::Handle<v8::Object>);
 
 V8NPObject* npObjectToV8NPObject(NPObject*);
 
-void disposeUnderlyingV8Object(NPObject*);
+void disposeUnderlyingV8Object(NPObject*, v8::Isolate*);
 
 } // namespace WebCore