Revert "Remove OwnPtr from Blink."

third_party/WebKit/Source/platform/animation/CompositorAnimationTimeline.h

 // Copyright 2016 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 CompositorAnimationTimeline_h
 #define CompositorAnimationTimeline_h
 
 #include "base/memory/ref_counted.h"
 #include "cc/animation/animation_timeline.h"
 #include "platform/PlatformExport.h"
 #include "wtf/Noncopyable.h"
-#include "wtf/PtrUtil.h"
+#include "wtf/PassOwnPtr.h"
+
 #include <memory>
 
 namespace blink {
 
 class CompositorAnimationHost;
 class CompositorAnimationPlayerClient;
 
 // A compositor representation for cc::AnimationTimeline.
 class PLATFORM_EXPORT CompositorAnimationTimeline {
     WTF_MAKE_NONCOPYABLE(CompositorAnimationTimeline);
 public:
-    static std::unique_ptr<CompositorAnimationTimeline> create()
+    static PassOwnPtr<CompositorAnimationTimeline> create()
     {
-        return wrapUnique(new CompositorAnimationTimeline());
+        return adoptPtr(new CompositorAnimationTimeline());
     }
 
     ~CompositorAnimationTimeline();
 
     cc::AnimationTimeline* animationTimeline() const;
     // TODO(ymalik): Currently we just wrap cc::AnimationHost in
     // CompositorAnimationHost. Correctly introduce CompositorAnimationHost
     // to blink. See crbug.com/610763.
     CompositorAnimationHost compositorAnimationHost();
 
     void playerAttached(const CompositorAnimationPlayerClient&);
     void playerDestroyed(const CompositorAnimationPlayerClient&);
 
 private:
     CompositorAnimationTimeline();
 
     scoped_refptr<cc::AnimationTimeline> m_animationTimeline;
 };
 
 } // namespace blink
 
 #endif // CompositorAnimationTimeline_h