Revert "Remove OwnPtr from Blink."

third_party/WebKit/Source/platform/animation/CompositorTransformAnimationCurve.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 CompositorTransformAnimationCurve_h
 #define CompositorTransformAnimationCurve_h
 
 #include "platform/PlatformExport.h"
 #include "platform/animation/CompositorAnimationCurve.h"
 #include "platform/animation/CompositorTransformKeyframe.h"
 #include "platform/animation/TimingFunction.h"
 #include "wtf/Noncopyable.h"
-#include "wtf/PtrUtil.h"
-#include <memory>
+#include "wtf/PassOwnPtr.h"
 
 namespace cc {
 class KeyframedTransformAnimationCurve;
 }
 
 namespace blink {
 class CompositorTransformKeyframe;
 }
 
 namespace blink {
 
 // A keyframed transform animation curve.
 class PLATFORM_EXPORT CompositorTransformAnimationCurve : public CompositorAnimationCurve {
     WTF_MAKE_NONCOPYABLE(CompositorTransformAnimationCurve);
 public:
-    static std::unique_ptr<CompositorTransformAnimationCurve> create()
+    static PassOwnPtr<CompositorTransformAnimationCurve> create()
     {
-        return wrapUnique(new CompositorTransformAnimationCurve());
+        return adoptPtr(new CompositorTransformAnimationCurve());
     }
 
     ~CompositorTransformAnimationCurve() override;
 
     void addLinearKeyframe(const CompositorTransformKeyframe&);
     void addCubicBezierKeyframe(const CompositorTransformKeyframe&, CubicBezierTimingFunction::EaseType);
     // Adds the keyframe with a custom, bezier timing function. Note, it is
     // assumed that x0 = y0, and x3 = y3 = 1.
     void addCubicBezierKeyframe(const CompositorTransformKeyframe&, double x1, double y1, double x2, double y2);
     void addStepsKeyframe(const CompositorTransformKeyframe&, int steps, StepsTimingFunction::StepPosition);
 
     void setLinearTimingFunction();
     void setCubicBezierTimingFunction(CubicBezierTimingFunction::EaseType);
     void setCubicBezierTimingFunction(double x1, double y1, double x2, double y2);
     void setStepsTimingFunction(int numberOfSteps, StepsTimingFunction::StepPosition);
 
     // CompositorAnimationCurve implementation.
     std::unique_ptr<cc::AnimationCurve> cloneToAnimationCurve() const override;
 
 private:
     CompositorTransformAnimationCurve();
 
     std::unique_ptr<cc::KeyframedTransformAnimationCurve> m_curve;
 };
 
 } // namespace blink
 
 #endif // CompositorTransformAnimationCurve_h