ScriptPromise should understand the ScriptState from which the ScriptPromise is generated

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 909 matching lines @@
     }
 
 private:
     v8::Isolate* m_isolate;
 };
 
 class V8ExecutionScope {
 public:
     static PassOwnPtr<V8ExecutionScope> create(v8::Isolate*);
     explicit V8ExecutionScope(v8::Isolate*);
+    ScriptState* scriptState() const;
+    v8::Isolate* isolate() const;
     ~V8ExecutionScope();
 
 private:
     v8::HandleScope m_handleScope;
     v8::Context::Scope m_contextScope;
     RefPtr<ScriptState> m_scriptState;
 };
 
 } // namespace WebCore
 
 #endif // V8Binding_h