Remove OwnPtr::release() calls in core/ (part 1).

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

Index: third_party/WebKit/Source/core/animation/CSSImageSliceInterpolationType.cpp
diff --git a/third_party/WebKit/Source/core/animation/CSSImageSliceInterpolationType.cpp b/third_party/WebKit/Source/core/animation/CSSImageSliceInterpolationType.cpp
index b1c8a7727bd947da03d1731adf01bf5952554d38..28e27340cc90f9a6d4c4c646dd0279274ddfdf19 100644
--- a/third_party/WebKit/Source/core/animation/CSSImageSliceInterpolationType.cpp
+++ b/third_party/WebKit/Source/core/animation/CSSImageSliceInterpolationType.cpp
@@ -141,7 +141,7 @@ InterpolationValue convertImageSlice(const ImageSlice& slice, double zoom)
         list->set(i, InterpolableNumber::create(side.isFixed() ? side.pixels() / zoom : side.percent()));
     }
 
-    return InterpolationValue(list.release(), CSSImageSliceNonInterpolableValue::create(SliceTypes(slice)));
+    return InterpolationValue(std::move(list), CSSImageSliceNonInterpolableValue::create(SliceTypes(slice)));
 }
 
 } // namespace
@@ -189,7 +189,7 @@ InterpolationValue CSSImageSliceInterpolationType::maybeConvertValue(const CSSVa
         list->set(i, InterpolableNumber::create(sides[i]->getDoubleValue()));
     }
 
-    return InterpolationValue(list.release(), CSSImageSliceNonInterpolableValue::create(SliceTypes(slice)));
+    return InterpolationValue(std::move(list), CSSImageSliceNonInterpolableValue::create(SliceTypes(slice)));
 }
 
 InterpolationValue CSSImageSliceInterpolationType::maybeConvertUnderlyingValue(const InterpolationEnvironment& environment) const
@@ -206,7 +206,7 @@ PairwiseInterpolationValue CSSImageSliceInterpolationType::maybeMergeSingles(Int
     if (startSliceTypes != endSliceTypes)
         return nullptr;
 
-    return PairwiseInterpolationValue(start.interpolableValue.release(), end.interpolableValue.release(), start.nonInterpolableValue.release());
+    return PairwiseInterpolationValue(std::move(start.interpolableValue), std::move(end.interpolableValue), start.nonInterpolableValue.release());
 }
 
 void CSSImageSliceInterpolationType::composite(UnderlyingValueOwner& underlyingValueOwner, double underlyingFraction, const InterpolationValue& value, double interpolationFraction) const