Revert "Remove OwnPtr from Blink."

third_party/WebKit/Source/web/AudioOutputDeviceClientImpl.h

 // Copyright 2015 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 AudioOutputDeviceClientImpl_h
 #define AudioOutputDeviceClientImpl_h
 
 #include "modules/audio_output_devices/AudioOutputDeviceClient.h"
 #include "platform/heap/Handle.h"
-#include <memory>
 
 namespace blink {
 
 class AudioOutputDeviceClientImpl : public GarbageCollectedFinalized<AudioOutputDeviceClientImpl>, public AudioOutputDeviceClient {
     USING_GARBAGE_COLLECTED_MIXIN(AudioOutputDeviceClientImpl);
     WTF_MAKE_NONCOPYABLE(AudioOutputDeviceClientImpl);
 public:
     static AudioOutputDeviceClientImpl* create();
 
     ~AudioOutputDeviceClientImpl() override;
 
     // AudioOutputDeviceClient implementation.
-    void checkIfAudioSinkExistsAndIsAuthorized(ExecutionContext*, const WebString& sinkId, std::unique_ptr<WebSetSinkIdCallbacks>) override;
+    void checkIfAudioSinkExistsAndIsAuthorized(ExecutionContext*, const WebString& sinkId, PassOwnPtr<WebSetSinkIdCallbacks>) override;
 
     // GarbageCollectedFinalized implementation.
     DEFINE_INLINE_VIRTUAL_TRACE() { AudioOutputDeviceClient::trace(visitor); }
 
 private:
     AudioOutputDeviceClientImpl();
 };
 
 } // namespace blink
 
 #endif // AudioOutputDeviceClientImpl_h