Revert "Remove OwnPtr from Blink."

third_party/WebKit/Source/core/layout/LayoutThemeTest.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/layout/LayoutTheme.h"
 
 #include "core/dom/NodeComputedStyle.h"
 #include "core/frame/FrameView.h"
 #include "core/html/HTMLDocument.h"
 #include "core/html/HTMLElement.h"
 #include "core/page/FocusController.h"
 #include "core/page/Page.h"
 #include "core/style/ComputedStyle.h"
 #include "core/testing/DummyPageHolder.h"
 #include "platform/graphics/Color.h"
 #include "testing/gtest/include/gtest/gtest.h"
-#include <memory>
 
 namespace blink {
 
 class LayoutThemeTest : public ::testing::Test {
 protected:
     void SetUp() override;
     HTMLDocument& document() const { return *m_document; }
     void setHtmlInnerHTML(const char* htmlContent);
 
 private:
-    std::unique_ptr<DummyPageHolder> m_dummyPageHolder;
+    OwnPtr<DummyPageHolder> m_dummyPageHolder;
     Persistent<HTMLDocument> m_document;
 };
 
 void LayoutThemeTest::SetUp()
 {
     m_dummyPageHolder = DummyPageHolder::create(IntSize(800, 600));
     m_document = toHTMLDocument(&m_dummyPageHolder->document());
     ASSERT(m_document);
 }
 
@@ skipping 92 matching lines @@
 
     for (const auto& testcase : tests) {
         RuntimeEnabledFeatures::setNewMediaPlaybackUiEnabled(testcase.newUi);
         EXPECT_EQ(testcase.expectedResult,
             LayoutTheme::theme().formatMediaControlsCurrentTime(testcase.time, testcase.duration));
     }
     RuntimeEnabledFeatures::setNewMediaPlaybackUiEnabled(newUi);
 }
 
 } // namespace blink