Revert "Remove OwnPtr from Blink."

third_party/WebKit/Source/core/dom/IncrementLoadEventDelayCount.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 "core/dom/IncrementLoadEventDelayCount.h"
 
 #include "core/dom/Document.h"
-#include "wtf/PtrUtil.h"
-#include <memory>
 
 namespace blink {
 
-std::unique_ptr<IncrementLoadEventDelayCount> IncrementLoadEventDelayCount::create(Document& document)
+PassOwnPtr<IncrementLoadEventDelayCount> IncrementLoadEventDelayCount::create(Document& document)
 {
-    return wrapUnique(new IncrementLoadEventDelayCount(document));
+    return adoptPtr(new IncrementLoadEventDelayCount(document));
 }
 
 IncrementLoadEventDelayCount::IncrementLoadEventDelayCount(Document& document)
     : m_document(&document)
 {
     document.incrementLoadEventDelayCount();
 }
 
 IncrementLoadEventDelayCount::~IncrementLoadEventDelayCount()
 {
     m_document->decrementLoadEventDelayCount();
 }
 
 void IncrementLoadEventDelayCount::documentChanged(Document& newDocument)
 {
     newDocument.incrementLoadEventDelayCount();
     m_document->decrementLoadEventDelayCount();
     m_document = &newDocument;
 }
 } // namespace blink