Oilpan: Remove ref counting from EventTarget and all uses of Pass/RefPtr<EventTarget>.

Source/core/events/EventTarget.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  *           (C) 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ skipping 56 matching lines @@
 public:
     EventTargetData();
     ~EventTargetData();
 
     EventListenerMap eventListenerMap;
     OwnPtr<FiringEventIteratorVector> firingEventIterators;
 };
 
 class EventTarget : public WillBeGarbageCollectedMixin {
 public:
+#if !ENABLE(OILPAN)
     void ref() { refEventTarget(); }
     void deref() { derefEventTarget(); }
+#endif
 
     virtual const AtomicString& interfaceName() const = 0;
     virtual ExecutionContext* executionContext() const = 0;
 
     virtual Node* toNode();
     virtual DOMWindow* toDOMWindow();
     virtual MessagePort* toMessagePort();
 
     // FIXME: first 2 args to addEventListener and removeEventListener should
     // be required (per spec), but throwing TypeError breaks legacy content.
@@ skipping 24 matching lines @@
     virtual void trace(Visitor*) { }
 
 protected:
     virtual ~EventTarget();
 
     // Subclasses should likely not override these themselves; instead, they should subclass EventTargetWithInlineData.
     virtual EventTargetData* eventTargetData() = 0;
     virtual EventTargetData& ensureEventTargetData() = 0;
 
 private:
+#if !ENABLE(OILPAN)
     // Subclasses should likely not override these themselves; instead, they should use the REFCOUNTED_EVENT_TARGET() macro.
     virtual void refEventTarget() = 0;
     virtual void derefEventTarget() = 0;
+#endif
 
     DOMWindow* executingWindow();
     void fireEventListeners(Event*, EventTargetData*, EventListenerVector&);
     void countLegacyEvents(const AtomicString& legacyTypeName, EventListenerVector*, EventListenerVector*);
 
     bool clearAttributeEventListener(const AtomicString& eventType);
 
     friend class EventListenerIterator;
 };
 
@@ skipping 70 matching lines @@
 inline bool EventTarget::hasCapturingEventListeners(const AtomicString& eventType)
 {
     EventTargetData* d = eventTargetData();
     if (!d)
         return false;
     return d->eventListenerMap.containsCapturing(eventType);
 }
 
 } // namespace WebCore
 
+#if ENABLE(OILPAN)
 #define DEFINE_EVENT_TARGET_REFCOUNTING(baseClass) \
 public: \
     using baseClass::ref; \
+    using baseClass::deref; \
+private: \
+    typedef int thisIsHereToForceASemiColonAfterThisEventTargetMacro
+#define DEFINE_EVENT_TARGET_REFCOUNTING_WILL_BE_REMOVED(baseClass)
+#else
+#define DEFINE_EVENT_TARGET_REFCOUNTING(baseClass) \
+public: \
+    using baseClass::ref; \
     using baseClass::deref; \
 private: \
     virtual void refEventTarget() OVERRIDE FINAL { ref(); } \
     virtual void derefEventTarget() OVERRIDE FINAL { deref(); } \
     typedef int thisIsHereToForceASemiColonAfterThisEventTargetMacro
+#define DEFINE_EVENT_TARGET_REFCOUNTING_WILL_BE_REMOVED(baseClass) DEFINE_EVENT_TARGET_REFCOUNTING(baseClass)
+#endif
 
 // Use this macro if your EventTarget subclass is also a subclass of WTF::RefCounted.
 // A ref-counted class that uses a different method of refcounting should use DEFINE_EVENT_TARGET_REFCOUNTING directly.
 // Both of these macros are meant to be placed just before the "public:" section of the class declaration.
 #define REFCOUNTED_EVENT_TARGET(className) DEFINE_EVENT_TARGET_REFCOUNTING(RefCountedWillBeRefCountedGarbageCollected<className>)
 
 #endif // EventTarget_h