Revert "Remove OwnPtr from Blink."

third_party/WebKit/Source/core/animation/ShadowInterpolationFunctions.cpp

 // Copyright 2015 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.
 
 #include "core/animation/ShadowInterpolationFunctions.h"
 
 #include "core/animation/CSSColorInterpolationType.h"
 #include "core/animation/CSSLengthInterpolationType.h"
 #include "core/animation/InterpolationValue.h"
 #include "core/animation/NonInterpolableValue.h"
 #include "core/css/CSSShadowValue.h"
 #include "core/css/resolver/StyleResolverState.h"
 #include "core/style/ShadowData.h"
 #include "platform/geometry/FloatPoint.h"
-#include <memory>
 
 namespace blink {
 
 enum ShadowComponentIndex {
     ShadowX,
     ShadowY,
     ShadowBlur,
     ShadowSpread,
     ShadowColor,
     ShadowComponentIndexCount,
@@ skipping 30 matching lines @@
 
 PairwiseInterpolationValue ShadowInterpolationFunctions::maybeMergeSingles(InterpolationValue&& start, InterpolationValue&& end)
 {
     if (!nonInterpolableValuesAreCompatible(start.nonInterpolableValue.get(), end.nonInterpolableValue.get()))
         return nullptr;
     return PairwiseInterpolationValue(std::move(start.interpolableValue), std::move(end.interpolableValue), start.nonInterpolableValue.release());
 }
 
 InterpolationValue ShadowInterpolationFunctions::convertShadowData(const ShadowData& shadowData, double zoom)
 {
-    std::unique_ptr<InterpolableList> interpolableList = InterpolableList::create(ShadowComponentIndexCount);
+    OwnPtr<InterpolableList> interpolableList = InterpolableList::create(ShadowComponentIndexCount);
     interpolableList->set(ShadowX, CSSLengthInterpolationType::createInterpolablePixels(shadowData.x() / zoom));
     interpolableList->set(ShadowY, CSSLengthInterpolationType::createInterpolablePixels(shadowData.y() / zoom));
     interpolableList->set(ShadowBlur, CSSLengthInterpolationType::createInterpolablePixels(shadowData.blur() / zoom));
     interpolableList->set(ShadowSpread, CSSLengthInterpolationType::createInterpolablePixels(shadowData.spread() / zoom));
     interpolableList->set(ShadowColor, CSSColorInterpolationType::createInterpolableColor(shadowData.color()));
     return InterpolationValue(std::move(interpolableList), ShadowNonInterpolableValue::create(shadowData.style()));
 }
 
 InterpolationValue ShadowInterpolationFunctions::maybeConvertCSSValue(const CSSValue& value)
 {
     if (!value.isShadowValue())
         return nullptr;
     const CSSShadowValue& shadow = toCSSShadowValue(value);
 
     ShadowStyle style = Normal;
     if (shadow.style) {
         if (shadow.style->getValueID() == CSSValueInset)
             style = Inset;
         else
             return nullptr;
     }
 
-    std::unique_ptr<InterpolableList> interpolableList = InterpolableList::create(ShadowComponentIndexCount);
+    OwnPtr<InterpolableList> interpolableList = InterpolableList::create(ShadowComponentIndexCount);
     static_assert(ShadowX == 0, "Enum ordering check.");
     static_assert(ShadowY == 1, "Enum ordering check.");
     static_assert(ShadowBlur == 2, "Enum ordering check.");
     static_assert(ShadowSpread == 3, "Enum ordering check.");
     const CSSPrimitiveValue* lengths[] = {
         shadow.x.get(),
         shadow.y.get(),
         shadow.blur.get(),
         shadow.spread.get(),
     };
     for (size_t i = 0; i < WTF_ARRAY_LENGTH(lengths); i++) {
         if (lengths[i]) {
             InterpolationValue lengthField = CSSLengthInterpolationType::maybeConvertCSSValue(*lengths[i]);
             if (!lengthField)
                 return nullptr;
             ASSERT(!lengthField.nonInterpolableValue);
             interpolableList->set(i, std::move(lengthField.interpolableValue));
         } else {
             interpolableList->set(i, CSSLengthInterpolationType::createInterpolablePixels(0));
         }
     }
 
     if (shadow.color) {
-        std::unique_ptr<InterpolableValue> interpolableColor = CSSColorInterpolationType::maybeCreateInterpolableColor(*shadow.color);
+        OwnPtr<InterpolableValue> interpolableColor = CSSColorInterpolationType::maybeCreateInterpolableColor(*shadow.color);
         if (!interpolableColor)
             return nullptr;
         interpolableList->set(ShadowColor, std::move(interpolableColor));
     } else {
         interpolableList->set(ShadowColor, CSSColorInterpolationType::createInterpolableColor(StyleColor::currentColor()));
     }
 
     return InterpolationValue(std::move(interpolableList), ShadowNonInterpolableValue::create(style));
 }
 
-std::unique_ptr<InterpolableValue> ShadowInterpolationFunctions::createNeutralInterpolableValue()
+PassOwnPtr<InterpolableValue> ShadowInterpolationFunctions::createNeutralInterpolableValue()
 {
     return convertShadowData(ShadowData(FloatPoint(0, 0), 0, 0, Normal, StyleColor(Color::transparent)), 1).interpolableValue;
 }
 
-void ShadowInterpolationFunctions::composite(std::unique_ptr<InterpolableValue>& underlyingInterpolableValue, RefPtr<NonInterpolableValue>& underlyingNonInterpolableValue, double underlyingFraction, const InterpolableValue& interpolableValue, const NonInterpolableValue* nonInterpolableValue)
+void ShadowInterpolationFunctions::composite(OwnPtr<InterpolableValue>& underlyingInterpolableValue, RefPtr<NonInterpolableValue>& underlyingNonInterpolableValue, double underlyingFraction, const InterpolableValue& interpolableValue, const NonInterpolableValue* nonInterpolableValue)
 {
     ASSERT(nonInterpolableValuesAreCompatible(underlyingNonInterpolableValue.get(), nonInterpolableValue));
     InterpolableList& underlyingInterpolableList = toInterpolableList(*underlyingInterpolableValue);
     const InterpolableList& interpolableList = toInterpolableList(interpolableValue);
     underlyingInterpolableList.scaleAndAdd(underlyingFraction, interpolableList);
 }
 
 ShadowData ShadowInterpolationFunctions::createShadowData(const InterpolableValue& interpolableValue, const NonInterpolableValue* nonInterpolableValue, const StyleResolverState& state)
 {
     const InterpolableList& interpolableList = toInterpolableList(interpolableValue);
     const ShadowNonInterpolableValue& shadowNonInterpolableValue = toShadowNonInterpolableValue(*nonInterpolableValue);
     const CSSToLengthConversionData& conversionData = state.cssToLengthConversionData();
     Length shadowX = CSSLengthInterpolationType::resolveInterpolableLength(*interpolableList.get(ShadowX), nullptr, conversionData);
     Length shadowY = CSSLengthInterpolationType::resolveInterpolableLength(*interpolableList.get(ShadowY), nullptr, conversionData);
     Length shadowBlur = CSSLengthInterpolationType::resolveInterpolableLength(*interpolableList.get(ShadowBlur), nullptr, conversionData, ValueRangeNonNegative);
     Length shadowSpread = CSSLengthInterpolationType::resolveInterpolableLength(*interpolableList.get(ShadowSpread), nullptr, conversionData);
     ASSERT(shadowX.isFixed() && shadowY.isFixed() && shadowBlur.isFixed() && shadowSpread.isFixed());
     return ShadowData(
         FloatPoint(shadowX.value(), shadowY.value()), shadowBlur.value(), shadowSpread.value(), shadowNonInterpolableValue.style(),
         CSSColorInterpolationType::resolveInterpolableColor(*interpolableList.get(ShadowColor), state));
 }
 
 } // namespace blink