Use NewScriptState in MIDIAccessResolver, CustomElementLifecycleCallbacks and V8MutationCallbacks

Source/bindings/v8/MIDIAccessResolver.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef MIDIAccessResolver_h
 #define MIDIAccessResolver_h
 
 #include "bindings/v8/ScriptPromiseResolver.h"
 #include "wtf/OwnPtr.h"
 #include "wtf/RefCounted.h"
 
 namespace WebCore {
 
 class DOMError;
-class DOMWrapperWorld;
 class ExecutionContext;
 class MIDIAccess;
 
 class MIDIAccessResolver {
     WTF_MAKE_NONCOPYABLE(MIDIAccessResolver);
 public:
     static PassOwnPtr<MIDIAccessResolver> create(PassRefPtr<ScriptPromiseResolver> resolver, v8::Isolate* isolate)
     {
         return adoptPtr(new MIDIAccessResolver(resolver, isolate));
     }
     ~MIDIAccessResolver();
 
     ScriptPromise promise() { return m_resolver->promise(); }
 
     void resolve(MIDIAccess*, ExecutionContext*);
     void reject(DOMError*, ExecutionContext*);
 
 private:
     MIDIAccessResolver(PassRefPtr<ScriptPromiseResolver>, v8::Isolate*);
 
     RefPtr<ScriptPromiseResolver> m_resolver;
-    RefPtr<DOMWrapperWorld> m_world;
+    RefPtr<NewScriptState> m_scriptState;
 };
 
 } // namespace WebCore
 
 #endif // #ifndef MIDIAccessResolver_h