binding: Makes XxxObserverCallback use V8PrivateProperty instead of V8HiddenValue.

third_party/WebKit/Source/bindings/core/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
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  * THE POSSIBILITY OF SUCH DAMAGE.
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 #include "bindings/core/v8/V8MutationCallback.h"
 
 #include "bindings/core/v8/ScriptController.h"
+#include "bindings/core/v8/ScriptState.h"
 #include "bindings/core/v8/V8Binding.h"
-#include "bindings/core/v8/V8HiddenValue.h"
 #include "bindings/core/v8/V8MutationObserver.h"
 #include "bindings/core/v8/V8MutationRecord.h"
+#include "bindings/core/v8/V8PrivateProperty.h"
 #include "core/dom/ExecutionContext.h"
 #include "wtf/Assertions.h"
 
 namespace blink {
 
 V8MutationCallback::V8MutationCallback(v8::Local<v8::Function> callback, v8::Local<v8::Object> owner, ScriptState* scriptState)
     : ActiveDOMCallback(scriptState->getExecutionContext())
     , m_callback(scriptState->isolate(), callback)
     , m_scriptState(scriptState)
 {
-    V8HiddenValue::setHiddenValue(scriptState, owner, V8HiddenValue::callback(scriptState->isolate()), callback);
-    m_callback.setWeak(this, &setWeakCallback);
+    V8PrivateProperty::getMutationObserverCallback(scriptState->isolate()).set(scriptState->context(), owner, callback);
+    m_callback.setPhantom();
 }
 
 V8MutationCallback::~V8MutationCallback()
 {
 }
 
 void V8MutationCallback::call(const HeapVector<Member<MutationRecord>>& mutations, MutationObserver* observer)
 {
     if (!canInvokeCallback())
         return;
@@ skipping 20 matching lines @@
     v8::Local<v8::Value> v8Mutations = toV8(mutations, m_scriptState->context()->Global(), isolate);
     if (v8Mutations.IsEmpty())
         return;
     v8::Local<v8::Value> argv[] = { v8Mutations, observerHandle };
 
     v8::TryCatch exceptionCatcher(isolate);
     exceptionCatcher.SetVerbose(true);
     ScriptController::callFunction(getExecutionContext(), m_callback.newLocal(isolate), thisObject, WTF_ARRAY_LENGTH(argv), argv, isolate);
 }
 
-void V8MutationCallback::setWeakCallback(const v8::WeakCallbackInfo<V8MutationCallback>& data)
-{
-    data.GetParameter()->m_callback.clear();
-}
-
 DEFINE_TRACE(V8MutationCallback)
 {
     MutationCallback::trace(visitor);
     ActiveDOMCallback::trace(visitor);
 }
 
 } // namespace blink