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

Source/core/animation/CompositorPendingAnimations.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 40 matching lines @@
         document->view()->scheduleAnimation();
 
     bool visible = document->page() && document->page()->visibilityState() == PageVisibilityStateVisible;
     if (!visible && !m_timer.isActive()) {
         m_timer.startOneShot(0, FROM_HERE);
     }
 }
 
 bool CompositorPendingAnimations::update(bool startOnCompositor)
 {
-    WillBeHeapVector<RawPtrWillBeMember<Animation>> waitingForStartTime;
+    HeapVector<Member<Animation>> waitingForStartTime;
     bool startedSynchronizedOnCompositor = false;
 
-    WillBeHeapVector<RefPtrWillBeMember<Animation>> animations;
+    HeapVector<Member<Animation>> animations;
     animations.swap(m_pending);
     int compositorGroup = ++m_compositorGroup;
     if (compositorGroup == 0) {
         // Wrap around, skipping 0.
         compositorGroup = ++m_compositorGroup;
     }
 
     for (auto& animation : animations) {
         bool hadCompositorAnimation = animation->hasActiveAnimationsOnCompositor();
         animation->preCommit(compositorGroup, startOnCompositor);
@@ skipping 44 matching lines @@
     // If not, go ahead and start any animations that were waiting.
     notifyCompositorAnimationStarted(monotonicallyIncreasingTime());
 
     ASSERT(m_pending.isEmpty());
     return false;
 }
 
 void CompositorPendingAnimations::notifyCompositorAnimationStarted(double monotonicAnimationStartTime, int compositorGroup)
 {
     TRACE_EVENT0("blink", "CompositorPendingAnimations::notifyCompositorAnimationStarted");
-    WillBeHeapVector<RefPtrWillBeMember<Animation>> animations;
+    HeapVector<Member<Animation>> animations;
     animations.swap(m_waitingForCompositorAnimationStart);
 
     for (auto animation : animations) {
         if (animation->hasStartTime() || animation->playStateInternal() != Animation::Pending) {
             // Already started or no longer relevant.
             continue;
         }
         if (compositorGroup && animation->compositorGroup() != compositorGroup) {
             // Still waiting.
             m_waitingForCompositorAnimationStart.append(animation);
             continue;
         }
         animation->notifyCompositorStartTime(monotonicAnimationStartTime - animation->timeline()->zeroTime());
     }
 
 }
 
 DEFINE_TRACE(CompositorPendingAnimations)
 {
     visitor->trace(m_pending);
     visitor->trace(m_waitingForCompositorAnimationStart);
 }
 
 } // namespace