Revert "Remove OwnPtr from Blink."

third_party/WebKit/Source/modules/storage/StorageNamespace.h

 /*
  * Copyright (C) 2008 Apple 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 10 matching lines @@
  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef StorageNamespace_h
 #define StorageNamespace_h
 
 #include "modules/ModulesExport.h"
 #include "platform/heap/Handle.h"
-#include <memory>
+#include "wtf/OwnPtr.h"
+#include "wtf/PassOwnPtr.h"
 
 namespace blink {
 
 class WebStorageNamespace;
 class SecurityOrigin;
 class StorageArea;
 
 class MODULES_EXPORT StorageNamespace {
     USING_FAST_MALLOC(StorageNamespace);
 public:
-    explicit StorageNamespace(std::unique_ptr<WebStorageNamespace>);
+    explicit StorageNamespace(PassOwnPtr<WebStorageNamespace>);
     ~StorageNamespace();
 
     static StorageArea* localStorageArea(SecurityOrigin*);
 
     StorageArea* storageArea(SecurityOrigin*);
     bool isSameNamespace(const WebStorageNamespace& sessionNamespace) const;
 
 private:
-    std::unique_ptr<WebStorageNamespace> m_webStorageNamespace;
+    OwnPtr<WebStorageNamespace> m_webStorageNamespace;
 };
 
 } // namespace blink
 
 #endif // StorageNamespace_h