Include Page.h in fewer headers

Source/core/events/EventTarget.cpp

 /*
  * 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 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 @@
 #include "config.h"
 #include "core/events/EventTarget.h"
 
 #include "bindings/v8/ExceptionState.h"
 #include "core/dom/ExceptionCode.h"
 #include "core/dom/NoEventDispatchAssertion.h"
 #include "core/editing/Editor.h"
 #include "core/events/Event.h"
 #include "core/inspector/InspectorInstrumentation.h"
 #include "core/frame/LocalDOMWindow.h"
+#include "core/frame/UseCounter.h"
 #include "platform/RuntimeEnabledFeatures.h"
 #include "wtf/StdLibExtras.h"
 #include "wtf/Vector.h"
 
 using namespace WTF;
 
 namespace WebCore {
 
 EventTargetData::EventTargetData()
 {
@@ skipping 320 matching lines @@
     // they have one less listener to invoke.
     if (d->firingEventIterators) {
         for (size_t i = 0; i < d->firingEventIterators->size(); ++i) {
             d->firingEventIterators->at(i).iterator = 0;
             d->firingEventIterators->at(i).end = 0;
         }
     }
 }
 
 } // namespace WebCore