Revert "Remove OwnPtr from Blink."

third_party/WebKit/Source/platform/animation/CompositorTransformKeyframe.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 CompositorTransformKeyframe_h
 #define CompositorTransformKeyframe_h
 
 #include "platform/PlatformExport.h"
 #include "platform/animation/CompositorTransformOperations.h"
 #include "wtf/Noncopyable.h"
-#include <memory>
+#include "wtf/OwnPtr.h"
+#include "wtf/PassOwnPtr.h"
 
 namespace blink {
 
 class PLATFORM_EXPORT CompositorTransformKeyframe {
     WTF_MAKE_NONCOPYABLE(CompositorTransformKeyframe);
 public:
-    CompositorTransformKeyframe(double time, std::unique_ptr<CompositorTransformOperations> value);
+    CompositorTransformKeyframe(double time, PassOwnPtr<CompositorTransformOperations> value);
     ~CompositorTransformKeyframe();
 
     double time() const;
     const CompositorTransformOperations& value() const;
 
 private:
     double m_time;
-    std::unique_ptr<CompositorTransformOperations> m_value;
+    OwnPtr<CompositorTransformOperations> m_value;
 };
 
 } // namespace blink
 
 #endif // CompositorTransformKeyframe_h