Oilpan: Move AnimationNode::EventDelegate to oilpan's heap

Source/core/animation/AnimationNode.cpp

Index: Source/core/animation/AnimationNode.cpp
diff --git a/Source/core/animation/AnimationNode.cpp b/Source/core/animation/AnimationNode.cpp
index d6768ff6bc1a973ef60bafb42909fc5820462c61..c85f8cfb8faaadcfbab31a0d68b4bcef9b9baea2 100644
--- a/Source/core/animation/AnimationNode.cpp
+++ b/Source/core/animation/AnimationNode.cpp
@@ -50,7 +50,7 @@ Timing::FillMode resolvedFillMode(Timing::FillMode fillMode, bool isAnimation)
 
 } // namespace
 
-AnimationNode::AnimationNode(const Timing& timing, PassOwnPtr<EventDelegate> eventDelegate)
+AnimationNode::AnimationNode(const Timing& timing, PassOwnPtrWillBeRawPtr<EventDelegate> eventDelegate)
     : m_parent(nullptr)
     , m_startTime(0)
     , m_player(nullptr)
@@ -191,6 +191,7 @@ void AnimationNode::trace(Visitor* visitor)
 {
     visitor->trace(m_parent);
     visitor->trace(m_player);
+    visitor->trace(m_eventDelegate);
 }
 
 } // namespace blink