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

Source/core/animation/ColorStyleInterpolation.cpp

Index: Source/core/animation/ColorStyleInterpolation.cpp
diff --git a/Source/core/animation/ColorStyleInterpolation.cpp b/Source/core/animation/ColorStyleInterpolation.cpp
index e96ff48475bd06c863c4e9063707e58703cb4e29..1b8497185b12a54aaa4e6b1fd21d7015b24a4a56 100644
--- a/Source/core/animation/ColorStyleInterpolation.cpp
+++ b/Source/core/animation/ColorStyleInterpolation.cpp
@@ -22,7 +22,7 @@ bool ColorStyleInterpolation::canCreateFrom(const CSSValue& value)
     return value.isPrimitiveValue() && (toCSSPrimitiveValue(value).isValueID() || toCSSPrimitiveValue(value).isRGBColor());
 }
 
-PassOwnPtrWillBeRawPtr<InterpolableValue> ColorStyleInterpolation::colorToInterpolableValue(const CSSValue& value)
+InterpolableValue* ColorStyleInterpolation::colorToInterpolableValue(const CSSValue& value)
 {
     ASSERT(value.isPrimitiveValue());
     const CSSPrimitiveValue& primitive = toCSSPrimitiveValue(value);
@@ -41,7 +41,7 @@ PassOwnPtrWillBeRawPtr<InterpolableValue> ColorStyleInterpolation::colorToInterp
 
     int alpha = alphaChannel(color);
 
-    OwnPtrWillBeRawPtr<InterpolableList> list = InterpolableList::create(4);
+    InterpolableList* list = InterpolableList::create(4);
     list->set(0, InterpolableNumber::create(redChannel(color) * alpha));
     list->set(1, InterpolableNumber::create(greenChannel(color) * alpha));
     list->set(2, InterpolableNumber::create(blueChannel(color) * alpha));
@@ -79,10 +79,10 @@ DEFINE_TRACE(ColorStyleInterpolation)
     StyleInterpolation::trace(visitor);
 }
 
-PassRefPtrWillBeRawPtr<ColorStyleInterpolation> ColorStyleInterpolation::maybeCreateFromColor(const CSSValue& start, const CSSValue& end, CSSPropertyID id)
+ColorStyleInterpolation* ColorStyleInterpolation::maybeCreateFromColor(const CSSValue& start, const CSSValue& end, CSSPropertyID id)
 {
     if (canCreateFrom(start) && !toCSSPrimitiveValue(start).colorIsDerivedFromElement() && canCreateFrom(end) && !toCSSPrimitiveValue(end).colorIsDerivedFromElement())
-        return adoptRefWillBeNoop(new ColorStyleInterpolation(colorToInterpolableValue(start), colorToInterpolableValue(end), id));
+        return new ColorStyleInterpolation(colorToInterpolableValue(start), colorToInterpolableValue(end), id);
     return nullptr;
 }