[bindings] Refactor ScriptStateForTesting, V8TestingScope into V8BindingForTesting.h/cpp

Source/bindings/core/v8/ScriptPromisePropertyTest.cpp

 // 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.
 
 #include "config.h"
 #include "bindings/core/v8/ScriptPromiseProperty.h"
 
 #include "bindings/core/v8/DOMWrapperWorld.h"
 #include "bindings/core/v8/ScriptFunction.h"
 #include "bindings/core/v8/ScriptPromise.h"
 #include "bindings/core/v8/ScriptState.h"
 #include "bindings/core/v8/ScriptValue.h"
 #include "bindings/core/v8/V8Binding.h"
+#include "bindings/core/v8/V8BindingForTesting.h"
 #include "bindings/core/v8/V8GCController.h"
 #include "core/dom/Document.h"
 #include "core/testing/DummyPageHolder.h"
 #include "core/testing/GCObservation.h"
 #include "core/testing/GarbageCollectedScriptWrappable.h"
 #include "core/testing/RefCountedScriptWrappable.h"
 #include "platform/heap/Handle.h"
 #include "wtf/OwnPtr.h"
 #include "wtf/PassOwnPtr.h"
 #include "wtf/PassRefPtr.h"
@@ skipping 521 matching lines @@
 {
     test(String("hello"), "hello", __FILE__, __LINE__);
 }
 
 TEST_F(ScriptPromisePropertyNonScriptWrappableResolutionTargetTest, ResolveWithInteger)
 {
     test(-1, "-1", __FILE__, __LINE__);
 }
 
 } // namespace