Remove OwnPtr from Blink.

third_party/WebKit/Source/core/animation/BasicShapeInterpolationFunctions.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 BasicShapeInterpolationFunctions_h
 #define BasicShapeInterpolationFunctions_h
 
 #include "core/animation/InterpolationValue.h"
+#include <memory>
 
 namespace blink {
 
 class BasicShape;
 class CSSValue;
 class CSSToLengthConversionData;
 
 namespace BasicShapeInterpolationFunctions {
 
 InterpolationValue maybeConvertCSSValue(const CSSValue&);
 InterpolationValue maybeConvertBasicShape(const BasicShape*, double zoom);
-PassOwnPtr<InterpolableValue> createNeutralValue(const NonInterpolableValue&);
+std::unique_ptr<InterpolableValue> createNeutralValue(const NonInterpolableValue&);
 bool shapesAreCompatible(const NonInterpolableValue&, const NonInterpolableValue&);
 PassRefPtr<BasicShape> createBasicShape(const InterpolableValue&, const NonInterpolableValue&, const CSSToLengthConversionData&);
 
 } // namespace BasicShapeInterpolationFunctions
 
 } // namespace blink
 
 #endif // BasicShapeInterpolationFunctions_h