Revert "Remove OwnPtr from Blink."

third_party/WebKit/Source/core/loader/TextResourceDecoderBuilderTest.cpp

 // Copyright 2016 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/loader/TextResourceDecoderBuilder.h"
 
 #include "core/testing/DummyPageHolder.h"
 #include "testing/gtest/include/gtest/gtest.h"
-#include <memory>
 
 namespace blink {
 
 static const WTF::TextEncoding defaultEncodingForURL(const char* url)
 {
-    std::unique_ptr<DummyPageHolder> pageHolder = DummyPageHolder::create(IntSize(0, 0));
+    OwnPtr<DummyPageHolder> pageHolder = DummyPageHolder::create(IntSize(0, 0));
     Document& document = pageHolder->document();
     document.setURL(KURL(KURL(), url));
     TextResourceDecoderBuilder decoderBuilder("text/html", nullAtom);
     return decoderBuilder.buildFor(&document)->encoding();
 }
 
 TEST(TextResourceDecoderBuilderTest, defaultEncodingComesFromTopLevelDomain)
 {
     EXPECT_EQ(WTF::TextEncoding("Shift_JIS"), defaultEncodingForURL("http://tsubotaa.la.coocan.jp"));
     EXPECT_EQ(WTF::TextEncoding("windows-1251"), defaultEncodingForURL("http://udarenieru.ru/index.php"));
 }
 
 TEST(TextResourceDecoderBuilderTest, NoCountryDomainURLDefaultsToLatin1Encoding)
 {
     // Latin1 encoding is set in |TextResourceDecoder::defaultEncoding()|.
     EXPECT_EQ(WTF::Latin1Encoding(), defaultEncodingForURL("http://arstechnica.com/about-us"));
 }
 
 } // namespace blink