Use NewScriptState in MIDIAccessResolver, CustomElementLifecycleCallbacks and V8MutationCallbacks

Source/bindings/v8/V8MutationCallback.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 21 matching lines @@
 #include "bindings/v8/V8Binding.h"
 #include "bindings/v8/V8HiddenValue.h"
 #include "core/dom/ExecutionContext.h"
 #include "wtf/Assertions.h"
 
 namespace WebCore {
 
 V8MutationCallback::V8MutationCallback(v8::Handle<v8::Function> callback, ExecutionContext* context, v8::Handle<v8::Object> owner, v8::Isolate* isolate)
     : ActiveDOMCallback(context)
     , m_callback(isolate, callback)
-    , m_world(DOMWrapperWorld::current(isolate))
-    , m_isolate(isolate)
+    , m_scriptState(NewScriptState::current(isolate))
 {
-    V8HiddenValue::setHiddenValue(m_isolate, owner, V8HiddenValue::callback(m_isolate), callback);
+    V8HiddenValue::setHiddenValue(isolate, owner, V8HiddenValue::callback(isolate), callback);
     m_callback.setWeak(this, &setWeakCallback);
 }
 
 void V8MutationCallback::call(const Vector<RefPtr<MutationRecord> >& mutations, MutationObserver* observer)
 {
     if (!canInvokeCallback())
         return;
 
-    v8::HandleScope handleScope(m_isolate);
+    v8::Isolate* isolate = m_scriptState->isolate();
+    v8::HandleScope handleScope(isolate);
 
-    v8::Handle<v8::Context> v8Context = toV8Context(executionContext(), *m_world);
+    v8::Handle<v8::Context> v8Context = m_scriptState->context();
     if (v8Context.IsEmpty())
         return;
 
     v8::Context::Scope scope(v8Context);
 
-    v8::Handle<v8::Function> callback = m_callback.newLocal(m_isolate);
+    v8::Handle<v8::Function> callback = m_callback.newLocal(isolate);
     if (callback.IsEmpty())
         return;
 
-    v8::Handle<v8::Value> observerHandle = toV8(observer, v8::Handle<v8::Object>(), m_isolate);
+    v8::Handle<v8::Value> observerHandle = toV8(observer, v8::Handle<v8::Object>(), isolate);
     if (observerHandle.IsEmpty()) {
         if (!isScriptControllerTerminating())
             CRASH();
         return;
     }
 
     if (!observerHandle->IsObject())
         return;
 
     v8::Handle<v8::Object> thisObject = v8::Handle<v8::Object>::Cast(observerHandle);
-    v8::Handle<v8::Value> argv[] = { v8Array(mutations, m_isolate), observerHandle };
+    v8::Handle<v8::Value> argv[] = { v8Array(mutations, isolate), observerHandle };
 
     v8::TryCatch exceptionCatcher;
     exceptionCatcher.SetVerbose(true);
-    ScriptController::callFunction(executionContext(), callback, thisObject, 2, argv, m_isolate);
+    ScriptController::callFunction(executionContext(), callback, thisObject, 2, argv, isolate);
 }
 
 void V8MutationCallback::setWeakCallback(const v8::WeakCallbackData<v8::Function, V8MutationCallback>& data)
 {
     data.GetParameter()->m_callback.clear();
 }
 
 } // namespace WebCore