Make classes and structures in core/frame fast-allocated.

Source/core/frame/EventHandlerRegistry.h

Index: Source/core/frame/EventHandlerRegistry.h
diff --git a/Source/core/frame/EventHandlerRegistry.h b/Source/core/frame/EventHandlerRegistry.h
index 64e990dbe119d7b176d84a034cb36de8848fdb27..b89ea927a4ad5d8ce3a45e8d2d4b52ba1ac6686d 100644
--- a/Source/core/frame/EventHandlerRegistry.h
+++ b/Source/core/frame/EventHandlerRegistry.h
@@ -20,6 +20,7 @@ typedef HashCountedSet<EventTarget*> EventTargetSet;
 // documents that can be rendered or can receive input (i.e., are attached to a
 // FrameHost) are registered here.
 class CORE_EXPORT EventHandlerRegistry final : public NoBaseWillBeGarbageCollectedFinalized<EventHandlerRegistry> {
+    WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED(EventHandlerRegistry);
 public:
     explicit EventHandlerRegistry(FrameHost&);
     virtual ~EventHandlerRegistry();