Oilpan: Remove most WillBe types from the code base

third_party/WebKit/Source/core/animation/Animation.h

Index: third_party/WebKit/Source/core/animation/Animation.h
diff --git a/third_party/WebKit/Source/core/animation/Animation.h b/third_party/WebKit/Source/core/animation/Animation.h
index 0d88db13b5c0f721804a0b73182c0bae192caae1..d98274da97d7ae0f3d3bd846efcf088936855f35 100644
--- a/third_party/WebKit/Source/core/animation/Animation.h
+++ b/third_party/WebKit/Source/core/animation/Animation.h
@@ -58,7 +58,7 @@ class CORE_EXPORT Animation final
     , public WebCompositorAnimationPlayerClient {
     DEFINE_WRAPPERTYPEINFO();
     REFCOUNTED_GARBAGE_COLLECTED_EVENT_TARGET(Animation);
-    WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(Animation);
+    USING_GARBAGE_COLLECTED_MIXIN(Animation);
 public:
     enum AnimationPlayState {
         Idle,
@@ -178,8 +178,8 @@ public:
     DECLARE_VIRTUAL_TRACE();
 
 protected:
-    bool dispatchEventInternal(PassRefPtrWillBeRawPtr<Event>) override;
-    bool addEventListenerInternal(const AtomicString& eventType, PassRefPtrWillBeRawPtr<EventListener>, const EventListenerOptions&) override;
+    bool dispatchEventInternal(RawPtr<Event>) override;
+    bool addEventListenerInternal(const AtomicString& eventType, RawPtr<EventListener>, const EventListenerOptions&) override;
 
 private:
     Animation(ExecutionContext*, AnimationTimeline&, AnimationEffect*);
@@ -247,7 +247,7 @@ private:
     // Holds a 'finished' event queued for asynchronous dispatch via the
     // ScriptedAnimationController. This object remains active until the
     // event is actually dispatched.
-    RefPtrWillBeMember<Event> m_pendingFinishedEvent;
+    Member<Event> m_pendingFinishedEvent;
 
     enum CompositorAction {
         None,