Revert "Remove OwnPtr from Blink."

third_party/WebKit/Source/modules/webaudio/DefaultAudioDestinationNode.h

 /*
  * Copyright (C) 2011, 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.
  * 2.  Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  * LOSS OF USE, 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 DefaultAudioDestinationNode_h
 #define DefaultAudioDestinationNode_h
 
 #include "modules/webaudio/AudioDestinationNode.h"
 #include "platform/audio/AudioDestination.h"
-#include <memory>
+#include "wtf/OwnPtr.h"
 
 namespace blink {
 
 class AbstractAudioContext;
 class ExceptionState;
 
 class DefaultAudioDestinationHandler final : public AudioDestinationHandler {
 public:
     static PassRefPtr<DefaultAudioDestinationHandler> create(AudioNode&);
     ~DefaultAudioDestinationHandler() override;
 
     // AudioHandler
     void dispose() override;
     void initialize() override;
     void uninitialize() override;
     void setChannelCount(unsigned long, ExceptionState&) override;
 
     // AudioDestinationHandler
     void startRendering() override;
     void stopRendering() override;
     unsigned long maxChannelCount() const override;
 
 private:
     explicit DefaultAudioDestinationHandler(AudioNode&);
     void createDestination();
 
-    std::unique_ptr<AudioDestination> m_destination;
+    OwnPtr<AudioDestination> m_destination;
     String m_inputDeviceId;
     unsigned m_numberOfInputChannels;
 };
 
 class DefaultAudioDestinationNode final : public AudioDestinationNode {
 public:
     static DefaultAudioDestinationNode* create(AbstractAudioContext*);
 
 private:
     explicit DefaultAudioDestinationNode(AbstractAudioContext&);
 };
 
 } // namespace blink
 
 #endif // DefaultAudioDestinationNode_h