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

Source/core/animation/NumberOptionalNumberSVGInterpolation.h

 // 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.
 
 #ifndef NumberOptionalNumberSVGInterpolation_h
 #define NumberOptionalNumberSVGInterpolation_h
 
 #include "core/animation/SVGInterpolation.h"
 #include "core/svg/SVGNumber.h"
 #include "core/svg/SVGNumberOptionalNumber.h"
 
 namespace blink {
 
 class SVGNumberOptionalNumber;
 
 class NumberOptionalNumberSVGInterpolation : public SVGInterpolation {
 public:
-    static PassRefPtrWillBeRawPtr<NumberOptionalNumberSVGInterpolation> create(SVGPropertyBase* start, SVGPropertyBase* end, PassRefPtrWillBeRawPtr<SVGAnimatedPropertyBase> attribute)
+    static NumberOptionalNumberSVGInterpolation* create(SVGPropertyBase* start, SVGPropertyBase* end, PassRefPtrWillBeRawPtr<SVGAnimatedPropertyBase> attribute)
     {
-        return adoptRefWillBeNoop(new NumberOptionalNumberSVGInterpolation(toInterpolableValue(start), toInterpolableValue(end), attribute));
+        return new NumberOptionalNumberSVGInterpolation(toInterpolableValue(start), toInterpolableValue(end), attribute);
     }
 
     PassRefPtrWillBeRawPtr<SVGPropertyBase> interpolatedValue(SVGElement&) const final
     {
         return fromInterpolableValue(*m_cachedValue);
     }
 
     DEFINE_INLINE_VIRTUAL_TRACE()
     {
         SVGInterpolation::trace(visitor);
     }
 
 private:
-    NumberOptionalNumberSVGInterpolation(PassOwnPtrWillBeRawPtr<InterpolableValue> start, PassOwnPtrWillBeRawPtr<InterpolableValue> end, PassRefPtrWillBeRawPtr<SVGAnimatedPropertyBase> attribute)
+    NumberOptionalNumberSVGInterpolation(InterpolableValue* start, InterpolableValue* end, PassRefPtrWillBeRawPtr<SVGAnimatedPropertyBase> attribute)
         : SVGInterpolation(start, end, attribute)
     {
     }
 
-    static PassOwnPtrWillBeRawPtr<InterpolableValue> toInterpolableValue(SVGPropertyBase* value)
+    static InterpolableValue* toInterpolableValue(SVGPropertyBase* value)
     {
         RefPtrWillBeRawPtr<SVGNumberOptionalNumber> numberOptionalNumber = toSVGNumberOptionalNumber(value);
-        OwnPtrWillBeRawPtr<InterpolableList> result = InterpolableList::create(2);
+        InterpolableList* result = InterpolableList::create(2);
         result->set(0, InterpolableNumber::create(numberOptionalNumber->firstNumber()->value()));
         result->set(1, InterpolableNumber::create(numberOptionalNumber->secondNumber()->value()));
-        return result.release();
+        return result;
     }
 
     static PassRefPtrWillBeRawPtr<SVGNumberOptionalNumber> fromInterpolableValue(const InterpolableValue& value)
     {
         const InterpolableList& list = toInterpolableList(value);
         return SVGNumberOptionalNumber::create(
             SVGNumber::create(toInterpolableNumber(list.get(0))->value()),
             SVGNumber::create(toInterpolableNumber(list.get(1))->value()));
     }
 };
 
 }
 
 #endif // NumberOptionalNumberSVGInterpolation_h