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

Source/core/animation/EffectInput.cpp

Index: Source/core/animation/EffectInput.cpp
diff --git a/Source/core/animation/EffectInput.cpp b/Source/core/animation/EffectInput.cpp
index 49783b7372c3489c8491851073d1561b600a887d..218480fee7eb4410aac8f0e8e34a77ad9c6e4e40 100644
--- a/Source/core/animation/EffectInput.cpp
+++ b/Source/core/animation/EffectInput.cpp
@@ -189,7 +189,7 @@ const QualifiedName* supportedSVGAttribute(const String& property, SVGElement* s
 
 } // namespace
 
-PassRefPtrWillBeRawPtr<AnimationEffect> EffectInput::convert(Element* element, const Vector<Dictionary>& keyframeDictionaryVector, ExceptionState& exceptionState)
+AnimationEffect* EffectInput::convert(Element* element, const Vector<Dictionary>& keyframeDictionaryVector, ExceptionState& exceptionState)
 {
     // FIXME: Remove the dependency on element.
     if (!element)
@@ -200,7 +200,7 @@ PassRefPtrWillBeRawPtr<AnimationEffect> EffectInput::convert(Element* element, c
     double lastOffset = 0;
 
     for (const auto& keyframeDictionary : keyframeDictionaryVector) {
-        RefPtrWillBeRawPtr<StringKeyframe> keyframe = StringKeyframe::create();
+        StringKeyframe* keyframe = StringKeyframe::create();
 
         ScriptValue scriptValue;
         bool frameHasOffset = DictionaryHelper::get(keyframeDictionary, "offset", scriptValue) && !scriptValue.isNull();
@@ -269,7 +269,7 @@ PassRefPtrWillBeRawPtr<AnimationEffect> EffectInput::convert(Element* element, c
         }
     }
 
-    RefPtrWillBeRawPtr<StringKeyframeEffectModel> keyframeEffectModel = StringKeyframeEffectModel::create(keyframes);
+    StringKeyframeEffectModel* keyframeEffectModel = StringKeyframeEffectModel::create(keyframes);
     if (keyframeEffectModel->hasSyntheticKeyframes()) {
         exceptionState.throwDOMException(NotSupportedError, "Partial keyframes are not supported.");
         return nullptr;
@@ -283,7 +283,7 @@ PassRefPtrWillBeRawPtr<AnimationEffect> EffectInput::convert(Element* element, c
     return keyframeEffectModel;
 }
 
-PassRefPtrWillBeRawPtr<AnimationEffect> EffectInput::convert(Element* element, const AnimationEffectOrDictionarySequence& effectInput, ExceptionState& exceptionState)
+AnimationEffect* EffectInput::convert(Element* element, const AnimationEffectOrDictionarySequence& effectInput, ExceptionState& exceptionState)
 {
     if (effectInput.isAnimationEffect())
         return effectInput.getAsAnimationEffect();