Revert "Remove OwnPtr from Blink."

third_party/WebKit/Source/core/html/HTMLFormControlElementTest.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/html/HTMLFormControlElement.h"
 
 #include "core/frame/FrameView.h"
 #include "core/html/HTMLDocument.h"
 #include "core/html/HTMLInputElement.h"
 #include "core/layout/LayoutObject.h"
 #include "core/loader/EmptyClients.h"
 #include "core/testing/DummyPageHolder.h"
 #include "testing/gtest/include/gtest/gtest.h"
-#include <memory>
 
 namespace blink {
 
 class HTMLFormControlElementTest : public ::testing::Test {
 protected:
     void SetUp() override;
 
     DummyPageHolder& page() const { return *m_dummyPageHolder; }
     HTMLDocument& document() const { return *m_document; }
 
 private:
-    std::unique_ptr<DummyPageHolder> m_dummyPageHolder;
+    OwnPtr<DummyPageHolder> m_dummyPageHolder;
     Persistent<HTMLDocument> m_document;
 };
 
 void HTMLFormControlElementTest::SetUp()
 {
     Page::PageClients pageClients;
     fillWithEmptyClients(pageClients);
     m_dummyPageHolder = DummyPageHolder::create(IntSize(800, 600), &pageClients);
 
     m_document = toHTMLDocument(&m_dummyPageHolder->document());
@@ skipping 32 matching lines @@
 
     input->setCustomValidity(String());
     message = input->validationMessage().stripWhiteSpace();
     subMessage = input->validationSubMessage().stripWhiteSpace();
     input->findCustomValidationMessageTextDirection(message, messageDir, subMessage, subMessageDir);
     EXPECT_EQ(LTR, messageDir);
     EXPECT_EQ(RTL, subMessageDir);
 }
 
 } // namespace blink