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

Source/core/animation/AnimationTimeline.cpp

Index: Source/core/animation/AnimationTimeline.cpp
diff --git a/Source/core/animation/AnimationTimeline.cpp b/Source/core/animation/AnimationTimeline.cpp
index 657ab55053dfb11ac5005d78cf0c32fa6a75494e..9ba0d68e2937a9700ceed90ef73ed6384f6650c7 100644
--- a/Source/core/animation/AnimationTimeline.cpp
+++ b/Source/core/animation/AnimationTimeline.cpp
@@ -59,12 +59,12 @@ bool compareAnimationPlayers(const RefPtrWillBeMember<AnimationPlayer>& left, co
 const double AnimationTimeline::s_minimumDelay = 0.04;
 
 
-PassRefPtrWillBeRawPtr<AnimationTimeline> AnimationTimeline::create(Document* document, PassOwnPtrWillBeRawPtr<PlatformTiming> timing)
+AnimationTimeline* AnimationTimeline::create(Document* document, PlatformTiming* timing)
 {
-    return adoptRefWillBeNoop(new AnimationTimeline(document, timing));
+    return new AnimationTimeline(document, timing);
 }
 
-AnimationTimeline::AnimationTimeline(Document* document, PassOwnPtrWillBeRawPtr<PlatformTiming> timing)
+AnimationTimeline::AnimationTimeline(Document* document, PlatformTiming* timing)
     : m_document(document)
     , m_zeroTime(0) // 0 is used by unit tests which cannot initialize from the loader
     , m_zeroTimeInitialized(false)
@@ -72,7 +72,7 @@ AnimationTimeline::AnimationTimeline(Document* document, PassOwnPtrWillBeRawPtr<
     , m_lastCurrentTimeInternal(0)
 {
     if (!timing)
-        m_timing = adoptPtrWillBeNoop(new AnimationTimelineTiming(this));
+        m_timing = new AnimationTimelineTiming(this);
     else
         m_timing = timing;
 
@@ -84,10 +84,6 @@ AnimationTimeline::AnimationTimeline(Document* document, PassOwnPtrWillBeRawPtr<
 
 AnimationTimeline::~AnimationTimeline()
 {
-#if !ENABLE(OILPAN)
-    for (const auto& player : m_players)
-        player->detachFromTimeline();
-#endif
 }
 
 void AnimationTimeline::playerAttached(AnimationPlayer& player)
@@ -307,19 +303,11 @@ double AnimationTimeline::playbackRate() const
     return m_playbackRate;
 }
 
-#if !ENABLE(OILPAN)
-void AnimationTimeline::detachFromDocument()
-{
-    // FIXME: AnimationTimeline should keep Document alive.
-    m_document = nullptr;
-}
-#endif
-
 DEFINE_TRACE(AnimationTimeline)
 {
+    visitor->trace(m_timing);
 #if ENABLE(OILPAN)
     visitor->trace(m_document);
-    visitor->trace(m_timing);
     visitor->trace(m_playersNeedingUpdate);
     visitor->trace(m_players);
 #endif