[Oilpan] Migrate most classes under core/animations to Oilpan heap.

Source/core/animation/InvalidatableStyleInterpolation.cpp

Index: Source/core/animation/InvalidatableStyleInterpolation.cpp
diff --git a/Source/core/animation/InvalidatableStyleInterpolation.cpp b/Source/core/animation/InvalidatableStyleInterpolation.cpp
index 685df8c737051f0b1fb1f655774a0462cdef2e84..dc8ee16694e1bb2acd382f06b61394afbce53903 100644
--- a/Source/core/animation/InvalidatableStyleInterpolation.cpp
+++ b/Source/core/animation/InvalidatableStyleInterpolation.cpp
@@ -28,10 +28,10 @@ bool InvalidatableStyleInterpolation::maybeCachePairwiseConversion(const StyleRe
     for (const auto& interpolationType : m_interpolationTypes) {
         if ((m_startKeyframe->isNeutral() || m_endKeyframe->isNeutral()) && (!underlyingValue || underlyingValue->type() != *interpolationType))
             continue;
-        OwnPtrWillBeRawPtr<PairwisePrimitiveInterpolation> pairwiseConversion = interpolationType->maybeConvertPairwise(*m_startKeyframe, *m_endKeyframe, state, m_conversionCheckers);
+        PairwisePrimitiveInterpolation* pairwiseConversion = interpolationType->maybeConvertPairwise(*m_startKeyframe, *m_endKeyframe, state, m_conversionCheckers);
         if (pairwiseConversion) {
             m_cachedValue = pairwiseConversion->initialValue();
-            m_cachedConversion = pairwiseConversion.release();
+            m_cachedConversion = pairwiseConversion;
             return true;
         }
     }
@@ -46,27 +46,27 @@ void InvalidatableStyleInterpolation::interpolate(int, double fraction)
     // We defer the interpolation to ensureValidInterpolation() if m_cachedConversion is null.
 }
 
-PassOwnPtrWillBeRawPtr<InterpolationValue> InvalidatableStyleInterpolation::convertSingleKeyframe(const CSSPropertySpecificKeyframe& keyframe, const StyleResolverState& state, const InterpolationValue* underlyingValue) const
+InterpolationValue* InvalidatableStyleInterpolation::convertSingleKeyframe(const CSSPropertySpecificKeyframe& keyframe, const StyleResolverState& state, const InterpolationValue* underlyingValue) const
 {
     if (keyframe.isNeutral() && !underlyingValue)
         return nullptr;
     for (const auto& interpolationType : m_interpolationTypes) {
         if (keyframe.isNeutral() && underlyingValue->type() != *interpolationType)
             continue;
-        OwnPtrWillBeRawPtr<InterpolationValue> result = interpolationType->maybeConvertSingle(keyframe, &state, m_conversionCheckers);
+        InterpolationValue* result = interpolationType->maybeConvertSingle(keyframe, &state, m_conversionCheckers);
         if (result)
-            return result.release();
+            return result;
     }
     ASSERT(keyframe.isNeutral());
     return nullptr;
 }
 
-PassOwnPtrWillBeRawPtr<InterpolationValue> InvalidatableStyleInterpolation::maybeConvertUnderlyingValue(const StyleResolverState& state) const
+InterpolationValue* InvalidatableStyleInterpolation::maybeConvertUnderlyingValue(const StyleResolverState& state) const
 {
     for (const auto& interpolationType : m_interpolationTypes) {
-        OwnPtrWillBeRawPtr<InterpolationValue> result = interpolationType->maybeConvertUnderlyingValue(state);
+        InterpolationValue* result = interpolationType->maybeConvertUnderlyingValue(state);
         if (result)
-            return result.release();
+            return result;
     }
     return nullptr;
 }
@@ -122,8 +122,8 @@ void InvalidatableStyleInterpolation::setFlagIfInheritUsed(StyleResolverState& s
 
 void InvalidatableStyleInterpolation::apply(StyleResolverState& state) const
 {
-    OwnPtrWillBeRawPtr<InterpolationValue> underlyingValue = dependsOnUnderlyingValue() ? maybeConvertUnderlyingValue(state) : nullptr;
-    ensureValidInterpolation(state, underlyingValue.get());
+    InterpolationValue* underlyingValue = dependsOnUnderlyingValue() ? maybeConvertUnderlyingValue(state) : nullptr;
+    ensureValidInterpolation(state, underlyingValue);
     if (!m_cachedValue)
         return;
     const InterpolableValue* appliedInterpolableValue = &m_cachedValue->interpolableValue();