Revert "Remove OwnPtr from Blink."

third_party/WebKit/Source/modules/fetch/FetchHeaderList.h

 // 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.
 
 #ifndef FetchHeaderList_h
 #define FetchHeaderList_h
 
 #include "modules/ModulesExport.h"
 #include "platform/heap/Handle.h"
+#include "wtf/OwnPtr.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/Vector.h"
 #include "wtf/text/WTFString.h"
-#include <memory>
 #include <utility>
 
 namespace blink {
 
 class Header;
 
 // http://fetch.spec.whatwg.org/#terminology-headers
 class MODULES_EXPORT FetchHeaderList final : public GarbageCollectedFinalized<FetchHeaderList> {
 public:
     typedef std::pair<String, String> Header;
     static FetchHeaderList* create();
     FetchHeaderList* clone();
 
     ~FetchHeaderList();
     void append(const String&, const String&);
     void set(const String&, const String&);
     // FIXME: Implement parse()
     String extractMIMEType() const;
 
     size_t size() const;
     void remove(const String&);
     bool get(const String&, String&) const;
     void getAll(const String&, Vector<String>&) const;
     bool has(const String&) const;
     void clearList();
 
     bool containsNonSimpleHeader() const;
 
-    const Vector<std::unique_ptr<Header>>& list() const { return m_headerList; }
+    const Vector<OwnPtr<Header>>& list() const { return m_headerList; }
     const Header& entry(size_t index) const { return *(m_headerList[index].get()); }
 
     static bool isValidHeaderName(const String&);
     static bool isValidHeaderValue(const String&);
 
     DEFINE_INLINE_TRACE() { }
 
 private:
     FetchHeaderList();
-    Vector<std::unique_ptr<Header>> m_headerList;
+    Vector<OwnPtr<Header>> m_headerList;
 };
 
 } // namespace blink
 
 #endif // FetchHeaderList_h