Revert "Remove OwnPtr from Blink."

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

Index: third_party/WebKit/Source/core/animation/ShadowInterpolationFunctions.cpp
diff --git a/third_party/WebKit/Source/core/animation/ShadowInterpolationFunctions.cpp b/third_party/WebKit/Source/core/animation/ShadowInterpolationFunctions.cpp
index cf7c77215c0b069d93fbe1624d3dfbe3d48d857c..697f1bda280b674c9dd4786366b454fa62339ada 100644
--- a/third_party/WebKit/Source/core/animation/ShadowInterpolationFunctions.cpp
+++ b/third_party/WebKit/Source/core/animation/ShadowInterpolationFunctions.cpp
@@ -12,7 +12,6 @@
 #include "core/css/resolver/StyleResolverState.h"
 #include "core/style/ShadowData.h"
 #include "platform/geometry/FloatPoint.h"
-#include <memory>
 
 namespace blink {
 
@@ -63,7 +62,7 @@ PairwiseInterpolationValue ShadowInterpolationFunctions::maybeMergeSingles(Inter
 
 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));
@@ -86,7 +85,7 @@ InterpolationValue ShadowInterpolationFunctions::maybeConvertCSSValue(const CSSV
             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.");
@@ -110,7 +109,7 @@ InterpolationValue ShadowInterpolationFunctions::maybeConvertCSSValue(const CSSV
     }
 
     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));
@@ -121,12 +120,12 @@ InterpolationValue ShadowInterpolationFunctions::maybeConvertCSSValue(const CSSV
     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);