Revert "Remove OwnPtr from Blink."

third_party/WebKit/Source/core/dom/DocumentTest.cpp

 /*
  * Copyright (c) 2014, 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 22 matching lines @@
 #include "core/frame/FrameView.h"
 #include "core/html/HTMLHeadElement.h"
 #include "core/html/HTMLLinkElement.h"
 #include "core/testing/DummyPageHolder.h"
 #include "platform/heap/Handle.h"
 #include "platform/weborigin/ReferrerPolicy.h"
 #include "platform/weborigin/SchemeRegistry.h"
 #include "platform/weborigin/SecurityOrigin.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
-#include <memory>
 
 namespace blink {
 
 class DocumentTest : public ::testing::Test {
 protected:
     void SetUp() override;
 
     void TearDown() override
     {
         ThreadHeap::collectAllGarbage();
     }
 
     Document& document() const { return m_dummyPageHolder->document(); }
     Page& page() const { return m_dummyPageHolder->page(); }
 
     void setHtmlInnerHTML(const char*);
 
 private:
-    std::unique_ptr<DummyPageHolder> m_dummyPageHolder;
+    OwnPtr<DummyPageHolder> m_dummyPageHolder;
 };
 
 void DocumentTest::SetUp()
 {
     m_dummyPageHolder = DummyPageHolder::create(IntSize(800, 600));
 }
 
 void DocumentTest::setHtmlInnerHTML(const char* htmlContent)
 {
     document().documentElement()->setInnerHTML(String::fromUTF8(htmlContent), ASSERT_NO_EXCEPTION);
@@ skipping 205 matching lines @@
     EXPECT_TRUE(document().getSecurityOrigin()->isPotentiallyTrustworthy());
 
     origin = SecurityOrigin::createFromString("https://example.test");
     document().setSecurityOrigin(origin);
     document().enforceSandboxFlags(mask);
     EXPECT_TRUE(document().getSecurityOrigin()->isUnique());
     EXPECT_TRUE(document().getSecurityOrigin()->isPotentiallyTrustworthy());
 }
 
 } // namespace blink