Revert "Remove OwnPtr from Blink."

third_party/WebKit/Source/modules/webmidi/MIDIAccessInitializer.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 MIDIAccessInitializer_h
 #define MIDIAccessInitializer_h
 
 #include "bindings/core/v8/ScriptPromise.h"
 #include "bindings/core/v8/ScriptPromiseResolver.h"
 #include "modules/ModulesExport.h"
 #include "modules/webmidi/MIDIAccessor.h"
 #include "modules/webmidi/MIDIAccessorClient.h"
 #include "modules/webmidi/MIDIOptions.h"
 #include "modules/webmidi/MIDIPort.h"
+#include "wtf/OwnPtr.h"
 #include "wtf/Vector.h"
-#include <memory>
 
 namespace blink {
 
 class ScriptState;
 
 class MODULES_EXPORT MIDIAccessInitializer : public ScriptPromiseResolver, public MIDIAccessorClient {
 public:
     struct PortDescriptor {
         DISALLOW_NEW_EXCEPT_PLACEMENT_NEW();
         String id;
@@ skipping 39 matching lines @@
 
 private:
     MIDIAccessInitializer(ScriptState*, const MIDIOptions&);
 
     ExecutionContext* getExecutionContext() const;
     ScriptPromise start();
     void dispose();
 
     void contextDestroyed() override;
 
-    std::unique_ptr<MIDIAccessor> m_accessor;
+    OwnPtr<MIDIAccessor> m_accessor;
     Vector<PortDescriptor> m_portDescriptors;
     MIDIOptions m_options;
     bool m_hasBeenDisposed;
     bool m_permissionResolved;
 };
 
 } // namespace blink
 
 #endif // MIDIAccessInitializer_h