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

Source/core/animation/InertEffect.cpp

Index: Source/core/animation/InertEffect.cpp
diff --git a/Source/core/animation/InertEffect.cpp b/Source/core/animation/InertEffect.cpp
index 7e5deb892795a42a25b9766d816ffc5a3df33266..762c47d4aa3d30a5f2c8339ba5d0a193f5650fd7 100644
--- a/Source/core/animation/InertEffect.cpp
+++ b/Source/core/animation/InertEffect.cpp
@@ -35,12 +35,12 @@
 
 namespace blink {
 
-PassRefPtrWillBeRawPtr<InertEffect> InertEffect::create(PassRefPtrWillBeRawPtr<EffectModel> effect, const Timing& timing, bool paused, double inheritedTime)
+InertEffect* InertEffect::create(EffectModel* effect, const Timing& timing, bool paused, double inheritedTime)
 {
-    return adoptRefWillBeNoop(new InertEffect(effect, timing, paused, inheritedTime));
+    return new InertEffect(effect, timing, paused, inheritedTime);
 }
 
-InertEffect::InertEffect(PassRefPtrWillBeRawPtr<EffectModel> model, const Timing& timing, bool paused, double inheritedTime)
+InertEffect::InertEffect(EffectModel* model, const Timing& timing, bool paused, double inheritedTime)
     : AnimationEffect(timing)
     , m_model(model)
     , m_paused(paused)
@@ -48,11 +48,12 @@ InertEffect::InertEffect(PassRefPtrWillBeRawPtr<EffectModel> model, const Timing
 {
 }
 
-void InertEffect::sample(OwnPtrWillBeRawPtr<WillBeHeapVector<RefPtrWillBeMember<Interpolation>>>& result)
+void InertEffect::sample(HeapVector<Member<Interpolation>>*& result)
 {
     updateInheritedTime(m_inheritedTime, TimingUpdateOnDemand);
     if (!isInEffect()) {
-        result.clear();
+        if (result)
+            result->clear();
         return;
     }