Remove OwnPtr from Blink.

third_party/WebKit/Source/web/MIDIClientProxy.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:
  *
  *     * 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 15 matching lines @@
  * 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 MIDIClientProxy_h
 #define MIDIClientProxy_h
 
 #include "modules/webmidi/MIDIClient.h"
 #include "platform/heap/Handle.h"
+#include "wtf/PtrUtil.h"
+#include <memory>
 
 namespace blink {
 
 class MIDIAccessInitializer;
 class MIDIOptions;
 class WebMIDIClient;
 
 class MIDIClientProxy final : public MIDIClient {
 public:
-    static PassOwnPtr<MIDIClientProxy> create(WebMIDIClient* client)
+    static std::unique_ptr<MIDIClientProxy> create(WebMIDIClient* client)
     {
-        return adoptPtr(new MIDIClientProxy(client));
+        return wrapUnique(new MIDIClientProxy(client));
     }
 
     // MIDIClient
     void requestPermission(MIDIAccessInitializer*, const MIDIOptions&) override;
     void cancelPermissionRequest(MIDIAccessInitializer*) override;
 
 private:
     explicit MIDIClientProxy(WebMIDIClient*);
 
     WebMIDIClient* m_client;
 };
 
 } // namespace blink
 
 #endif // MIDIClientProxy_h