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

Source/core/plugins/PluginView.h

Index: Source/core/plugins/PluginView.h
diff --git a/Source/core/plugins/PluginView.h b/Source/core/plugins/PluginView.h
index c1cdc2f61f392b5e8d1f2b48c5997dac77e07ee0..dc18073af38585b3232410befb8ced49560042d5 100644
--- a/Source/core/plugins/PluginView.h
+++ b/Source/core/plugins/PluginView.h
@@ -1,6 +1,7 @@
 /*
  * Copyright (C) 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2013 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
@@ -33,6 +34,11 @@
 struct NPObject;
 
 namespace blink { class WebLayer; }
+namespace v8 {
+template <typename T> class Local;
+class Isolate;
+class Object;
+}
 
 namespace blink {
 
@@ -45,7 +51,7 @@ public:
     virtual bool isPluginView() const OVERRIDE FINAL { return true; }
 
     virtual blink::WebLayer* platformLayer() const { return 0; }
-    virtual NPObject* scriptableObject() { return 0; }
+    virtual void getScriptableObject(v8::Isolate*, v8::Local<v8::Object>*) { }
     virtual bool getFormValue(String&) { return false; }
     virtual bool wantsWheelEvents() { return false; }
     virtual bool supportsKeyboardFocus() const { return false; }