Make classes and structures in core/events and core/fetch fast-allocated.

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 21 matching lines @@
 #ifndef EventTarget_h
 #define EventTarget_h
 
 #include "bindings/core/v8/ScriptWrappable.h"
 #include "core/CoreExport.h"
 #include "core/EventNames.h"
 #include "core/EventTargetNames.h"
 #include "core/EventTypeNames.h"
 #include "core/events/EventListenerMap.h"
 #include "platform/heap/Handle.h"
+#include "wtf/Allocator.h"
 #include "wtf/text/AtomicString.h"
 
 namespace blink {
 
 class LocalDOMWindow;
 class Event;
 class ExceptionState;
 class MessagePort;
 class Node;
 
 struct FiringEventIterator {
+    ALLOW_ONLY_INLINE_ALLOCATION();

[Yuta Kitamura, 2015/10/26 08:15:54]

Is this needed?

FiringEventIterator only contains off-heap objects, so having
ALLOW_ONLY_INLINE_ALLOCATION() here seems meritless.

[tasak, 2015/10/26 08:19:01]

I added this to ensure that no one invokes FiringEventIterator's new / delete.

     FiringEventIterator(const AtomicString& eventType, size_t& iterator, size_t& end)
         : eventType(eventType)
         , iterator(iterator)
         , end(end)
     {
     }
 
     const AtomicString& eventType;
     size_t& iterator;
     size_t& end;
@@ skipping 257 matching lines @@
     using baseClass::deref; \
 private: \
     void refEventTarget() final { ref(); } \
     void derefEventTarget() final { deref(); } \
     typedef int thisIsHereToForceASemiColonAfterThisEventTargetMacro
 #define REFCOUNTED_EVENT_TARGET(baseClass) DEFINE_EVENT_TARGET_REFCOUNTING(RefCounted<baseClass>)
 #define REFCOUNTED_GARBAGE_COLLECTED_EVENT_TARGET(baseClass) DEFINE_EVENT_TARGET_REFCOUNTING(RefCountedGarbageCollected<baseClass>)
 #endif // ENABLE(OILPAN)
 
 #endif // EventTarget_h