Revert "Remove OwnPtr from Blink."

third_party/WebKit/Source/modules/indexeddb/WebIDBCallbacksImpl.h

 /*
  * Copyright (C) 2013 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:
  *
  * 1. Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *
@@ skipping 12 matching lines @@
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY 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 WebIDBCallbacksImpl_h
 #define WebIDBCallbacksImpl_h
 
 #include "public/platform/modules/indexeddb/WebIDBCallbacks.h"
+#include "wtf/PassOwnPtr.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefPtr.h"
-#include <memory>
 
 namespace blink {
 
 class IDBRequest;
 class WebIDBCursor;
 class WebIDBDatabase;
 class WebIDBDatabaseError;
 class WebIDBKey;
 struct WebIDBMetadata;
 struct WebIDBValue;
 
 class WebIDBCallbacksImpl final : public WebIDBCallbacks {
     USING_FAST_MALLOC(WebIDBCallbacksImpl);
 public:
-    static std::unique_ptr<WebIDBCallbacksImpl> create(IDBRequest*);
+    static PassOwnPtr<WebIDBCallbacksImpl> create(IDBRequest*);
 
     ~WebIDBCallbacksImpl() override;
 
     // Pointers transfer ownership.
     void onError(const WebIDBDatabaseError&) override;
     void onSuccess(const WebVector<WebString>&) override;
     void onSuccess(WebIDBCursor*, const WebIDBKey&, const WebIDBKey& primaryKey, const WebIDBValue&) override;
     void onSuccess(WebIDBDatabase*, const WebIDBMetadata&) override;
     void onSuccess(const WebIDBKey&) override;
     void onSuccess(const WebIDBValue&) override;
     void onSuccess(const WebVector<WebIDBValue>&) override;
     void onSuccess(long long) override;
     void onSuccess() override;
     void onSuccess(const WebIDBKey&, const WebIDBKey& primaryKey, const WebIDBValue&) override;
     void onBlocked(long long oldVersion) override;
     void onUpgradeNeeded(long long oldVersion, WebIDBDatabase*, const WebIDBMetadata&, unsigned short dataLoss, WebString dataLossMessage) override;
 
 private:
     explicit WebIDBCallbacksImpl(IDBRequest*);
 
     Persistent<IDBRequest> m_request;
 };
 
 } // namespace blink
 
 #endif // WebIDBCallbacksImpl_h