Remove dead notification for number of wheel event handlers

Source/core/frame/LocalFrame.cpp

 /*
  * Copyright (C) 1998, 1999 Torben Weis <weis@kde.org>
  *                     1999 Lars Knoll <knoll@kde.org>
  *                     1999 Antti Koivisto <koivisto@kde.org>
  *                     2000 Simon Hausmann <hausmann@kde.org>
  *                     2000 Stefan Schimanski <1Stein@gmx.de>
  *                     2001 George Staikos <staikos@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2005 Alexey Proskuryakov <ap@nypop.com>
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
@@ skipping 492 matching lines @@
     document->updateLayoutIgnorePendingStylesheets();
 }
 
 void LocalFrame::deviceOrPageScaleFactorChanged()
 {
     document()->mediaQueryAffectingValueChanged();
     for (RefPtr<LocalFrame> child = tree().firstChild(); child; child = child->tree().nextSibling())
         child->deviceOrPageScaleFactorChanged();
 }
 
-void LocalFrame::notifyChromeClientWheelEventHandlerCountChanged() const
-{
-    // FIXME: No-one is using this information, so remove this code.
-    // Ensure that this method is being called on the main frame of the page.
-    ASSERT(isMainFrame());
-
-    EventHandlerRegistry& registry = m_host->eventHandlerRegistry();
-    unsigned count = 0;
-    if (const EventTargetSet* targets = registry.eventHandlerTargets(EventHandlerRegistry::WheelEvent)) {
-        for (EventTargetSet::const_iterator iter = targets->begin(); iter != targets->end(); ++iter)
-            count += iter->value;
-    }
-
-    m_host->chrome().client().numWheelEventHandlersChanged(count);
-}
-
 bool LocalFrame::isURLAllowed(const KURL& url) const
 {
     // We allow one level of self-reference because some sites depend on that,
     // but we don't allow more than one.
     if (page()->subframeCount() >= Page::maxNumberOfFrames)
         return false;
     bool foundSelfReference = false;
     for (const LocalFrame* frame = this; frame; frame = frame->tree().parent()) {
         if (equalIgnoringFragmentIdentifier(frame->document()->url(), url)) {
             if (foundSelfReference)
@@ skipping 118 matching lines @@
 LocalFrame* LocalFrame::localFrameRoot()
 {
     LocalFrame* curFrame = this;
     while (curFrame && curFrame->tree().parent() && curFrame->tree().parent()->isLocalFrame())
         curFrame = curFrame->tree().parent();
 
     return curFrame;
 }
 
 } // namespace WebCore