Revert "Remove OwnPtr from Blink."

third_party/WebKit/Source/core/html/HTMLImageElementTest.cpp

 // Copyright 2015 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/HTMLImageElement.h"
 
 #include "core/dom/Document.h"
 #include "core/frame/FrameView.h"
 #include "core/testing/DummyPageHolder.h"
 #include "testing/gtest/include/gtest/gtest.h"
-#include <memory>
 
 namespace blink {
 
 const int viewportWidth = 500;
 const int viewportHeight = 600;
 class HTMLImageElementTest : public testing::Test {
 protected:
     HTMLImageElementTest()
         : m_dummyPageHolder(DummyPageHolder::create(IntSize(viewportWidth, viewportHeight)))
     {
     }
 
-    std::unique_ptr<DummyPageHolder> m_dummyPageHolder;
+    OwnPtr<DummyPageHolder> m_dummyPageHolder;
 };
 
 TEST_F(HTMLImageElementTest, width)
 {
     HTMLImageElement* image = HTMLImageElement::create(m_dummyPageHolder->document(), nullptr, /* createdByParser */ false);
     image->setAttribute(HTMLNames::widthAttr, "400");
     // TODO(yoav): `width` does not impact resourceWidth until we resolve https://github.com/ResponsiveImagesCG/picture-element/issues/268
     EXPECT_EQ(500, image->getResourceWidth().width);
     image->setAttribute(HTMLNames::sizesAttr, "100vw");
     EXPECT_EQ(500, image->getResourceWidth().width);
 }
 
 TEST_F(HTMLImageElementTest, sourceSize)
 {
     HTMLImageElement* image = HTMLImageElement::create(m_dummyPageHolder->document(), nullptr, /* createdByParser */ false);
     image->setAttribute(HTMLNames::widthAttr, "400");
     EXPECT_EQ(viewportWidth, image->sourceSize(*image));
     image->setAttribute(HTMLNames::sizesAttr, "50vw");
     EXPECT_EQ(250, image->sourceSize(*image));
 }
 
 } // namespace blink