Make it possible to have <object>'s scriptableObject as a v8 object instead of NPObject.

Source/bindings/core/v8/NPV8Object.h

Index: Source/bindings/core/v8/NPV8Object.h
diff --git a/Source/bindings/core/v8/NPV8Object.h b/Source/bindings/core/v8/NPV8Object.h
index 1e6ab5e855906e2ea516f3bf55777faead030d44..5c99ca20350aa681e07b916dffd31846355fa8f9 100644
--- a/Source/bindings/core/v8/NPV8Object.h
+++ b/Source/bindings/core/v8/NPV8Object.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (C) 2006, 2007, 2008, 2009 Google Inc. All rights reserved.
+ * Copyright (C) 2014 Opera Software ASA. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
@@ -68,6 +69,8 @@ NPObject* npCreateV8ScriptObject(NPP, v8::Handle<v8::Object>, LocalDOMWindow*, v
 
 NPObject* v8ObjectToNPObject(v8::Handle<v8::Object>);
 
+bool isWrappedNPObject(v8::Handle<v8::Object>);
+
 V8NPObject* npObjectToV8NPObject(NPObject*);
 
 void disposeUnderlyingV8Object(NPObject*, v8::Isolate*);