Revert "Remove OwnPtr from Blink."

third_party/WebKit/Source/modules/mediastream/MediaStreamTrack.h

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  * Copyright (C) 2011 Ericsson AB. 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
@@ skipping 17 matching lines @@
 
 #include "bindings/core/v8/ActiveScriptWrappable.h"
 #include "core/dom/ActiveDOMObject.h"
 #include "modules/EventTargetModules.h"
 #include "modules/ModulesExport.h"
 #include "modules/mediastream/SourceInfo.h"
 #include "platform/mediastream/MediaStreamDescriptor.h"
 #include "platform/mediastream/MediaStreamSource.h"
 #include "public/platform/WebMediaConstraints.h"
 #include "wtf/Forward.h"
-#include <memory>
 
 namespace blink {
 
 class AudioSourceProvider;
 class ExceptionState;
 class MediaTrackConstraints;
 class MediaStreamTrackSourcesCallback;
 class MediaTrackSettings;
 
 class MODULES_EXPORT MediaStreamTrack
@@ skipping 44 matching lines @@
     // EventTarget
     const AtomicString& interfaceName() const override;
     ExecutionContext* getExecutionContext() const override;
 
     // ActiveScriptWrappable
     bool hasPendingActivity() const final;
 
     // ActiveDOMObject
     void stop() override;
 
-    std::unique_ptr<AudioSourceProvider> createWebAudioSource();
+    PassOwnPtr<AudioSourceProvider> createWebAudioSource();
 
     DECLARE_VIRTUAL_TRACE();
 
 private:
     friend class CanvasCaptureMediaStreamTrack;
 
     MediaStreamTrack(ExecutionContext*, MediaStreamComponent*);
 
     // MediaStreamSourceObserver
     void sourceChangedState() override;
 
     void propagateTrackEnded();
 
     MediaStreamSource::ReadyState m_readyState;
     HeapHashSet<Member<MediaStream>> m_registeredMediaStreams;
     bool m_isIteratingRegisteredMediaStreams;
     bool m_stopped;
     Member<MediaStreamComponent> m_component;
     WebMediaConstraints m_constraints;
 };
 
 typedef HeapVector<Member<MediaStreamTrack>> MediaStreamTrackVector;
 
 } // namespace blink
 
 #endif // MediaStreamTrack_h