Revert "Remove OwnPtr from Blink."

third_party/WebKit/Source/modules/mediasource/MediaSource.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 21 matching lines @@
 #define MediaSource_h
 
 #include "bindings/core/v8/ActiveScriptWrappable.h"
 #include "core/dom/ActiveDOMObject.h"
 #include "core/events/EventTarget.h"
 #include "core/html/HTMLMediaSource.h"
 #include "core/html/URLRegistry.h"
 #include "modules/mediasource/SourceBuffer.h"
 #include "modules/mediasource/SourceBufferList.h"
 #include "public/platform/WebMediaSource.h"
+#include "wtf/PassOwnPtr.h"
 #include "wtf/Vector.h"
-#include <memory>
 
 namespace blink {
 
 class ExceptionState;
 class GenericEventQueue;
 class WebSourceBuffer;
 
 class MediaSource final
     : public EventTargetWithInlineData
     , public HTMLMediaSource
@@ skipping 17 matching lines @@
     SourceBuffer* addSourceBuffer(const String& type, ExceptionState&);
     void removeSourceBuffer(SourceBuffer*, ExceptionState&);
     void setDuration(double, ExceptionState&);
     const AtomicString& readyState() const { return m_readyState; }
     void endOfStream(const AtomicString& error, ExceptionState&);
     void endOfStream(ExceptionState&);
     static bool isTypeSupported(const String& type);
 
     // HTMLMediaSource
     bool attachToElement(HTMLMediaElement*) override;
-    void setWebMediaSourceAndOpen(std::unique_ptr<WebMediaSource>) override;
+    void setWebMediaSourceAndOpen(PassOwnPtr<WebMediaSource>) override;
     void close() override;
     bool isClosed() const override;
     double duration() const override;
     TimeRanges* buffered() const override;
     TimeRanges* seekable() const override;
 
     // EventTarget interface
     const AtomicString& interfaceName() const override;
     ExecutionContext* getExecutionContext() const override;
 
@@ skipping 19 matching lines @@
     DECLARE_VIRTUAL_TRACE();
 
 private:
     explicit MediaSource(ExecutionContext*);
 
     void setReadyState(const AtomicString&);
     void onReadyStateChange(const AtomicString&, const AtomicString&);
 
     bool isUpdating() const;
 
-    std::unique_ptr<WebSourceBuffer> createWebSourceBuffer(const String& type, const String& codecs, ExceptionState&);
+    PassOwnPtr<WebSourceBuffer> createWebSourceBuffer(const String& type, const String& codecs, ExceptionState&);
     void scheduleEvent(const AtomicString& eventName);
     void endOfStreamInternal(const WebMediaSource::EndOfStreamStatus, ExceptionState&);
 
     // Implements the duration change algorithm.
     // https://dvcs.w3.org/hg/html-media/raw-file/default/media-source/media-source.html#duration-change-algorithm
     void durationChangeAlgorithm(double newDuration);
 
-    std::unique_ptr<WebMediaSource> m_webMediaSource;
+    OwnPtr<WebMediaSource> m_webMediaSource;
     AtomicString m_readyState;
     Member<GenericEventQueue> m_asyncEventQueue;
     WeakMember<HTMLMediaElement> m_attachedElement;
 
     Member<SourceBufferList> m_sourceBuffers;
     Member<SourceBufferList> m_activeSourceBuffers;
 
     bool m_isAddedToRegistry;
 };
 
 } // namespace blink
 
 #endif // MediaSource_h