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

Source/core/animation/SampledEffect.cpp

Index: Source/core/animation/SampledEffect.cpp
diff --git a/Source/core/animation/SampledEffect.cpp b/Source/core/animation/SampledEffect.cpp
index cc91740bdf10a4cb89cd8ce1886c80b707ded1c5..170047d9802800011f77a60ca4eab1d9e1bcc13d 100644
--- a/Source/core/animation/SampledEffect.cpp
+++ b/Source/core/animation/SampledEffect.cpp
@@ -11,7 +11,7 @@
 
 namespace blink {
 
-SampledEffect::SampledEffect(KeyframeEffect* effect, PassOwnPtrWillBeRawPtr<WillBeHeapVector<RefPtrWillBeMember<Interpolation>>> interpolations)
+SampledEffect::SampledEffect(KeyframeEffect* effect, HeapVector<Member<Interpolation>>* interpolations)
     : m_effect(effect)
     , m_animation(effect->animation())
     , m_interpolations(interpolations)
@@ -32,9 +32,7 @@ DEFINE_TRACE(SampledEffect)
 {
     visitor->trace(m_effect);
     visitor->trace(m_animation);
-#if ENABLE(OILPAN)
     visitor->trace(m_interpolations);
-#endif
 }
 
 void SampledEffect::applySVGUpdate(SVGElement& targetElement)