Remove FrameView::containsScrollableArea

Source/core/frame/FrameView.cpp

 /*
  * Copyright (C) 1998, 1999 Torben Weis <weis@kde.org>
  *                     1999 Lars Knoll <knoll@kde.org>
  *                     1999 Antti Koivisto <koivisto@kde.org>
  *                     2000 Dirk Mueller <mueller@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  *           (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
@@ skipping 3104 matching lines @@
         return false;
 
     ScrollableAreaSet::iterator it = m_scrollableAreas->find(scrollableArea);
     if (it == m_scrollableAreas->end())
         return false;
 
     m_scrollableAreas->remove(it);
     return true;
 }
 
-bool FrameView::containsScrollableArea(const ScrollableArea* scrollableArea) const
-{
-    ASSERT(scrollableArea);
-    if (!m_scrollableAreas || !scrollableArea)
-        return false;
-    return m_scrollableAreas->contains(const_cast<ScrollableArea*>(scrollableArea));
-}
-
 void FrameView::removeChild(Widget* widget)
 {
     if (widget->isFrameView())
         removeScrollableArea(toFrameView(widget));
 
     ScrollView::removeChild(widget);
 }
 
 bool FrameView::wheelEvent(const PlatformWheelEvent& wheelEvent)
 {
@@ skipping 76 matching lines @@
 void FrameView::willRemoveScrollbar(Scrollbar* scrollbar, ScrollbarOrientation orientation)
 {
     ScrollableArea::willRemoveScrollbar(scrollbar, orientation);
     if (AXObjectCache* cache = axObjectCache()) {
         cache->remove(scrollbar);
         cache->handleScrollbarUpdate(this);
     }
 }
 
 } // namespace WebCore