Cleanup <static_cast>: Switch to toFoo for Accessibility Objects.

Source/core/accessibility/AXObjectCache.cpp

 /*
  * Copyright (C) 2008, 2009, 2010 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 130 matching lines @@
     if (!axRenderImage)
         return 0;
 
     AccessibilityObject::AccessibilityChildrenVector imageChildren = axRenderImage->children();
     unsigned count = imageChildren.size();
     for (unsigned k = 0; k < count; ++k) {
         AccessibilityObject* child = imageChildren[k].get();
         if (!child->isImageMapLink())
             continue;
 
-        if (static_cast<AccessibilityImageMapLink*>(child)->areaElement() == areaElement)
+        if (toAccessibilityImageMapLink(child)->areaElement() == areaElement)
             return child;
     }
 
     return 0;
 }
 
 AccessibilityObject* AXObjectCache::focusedUIElementForPage(const Page* page)
 {
     if (!gAccessibilityEnabled)
         return 0;
@@ skipping 150 matching lines @@
     if (!widget)
         return 0;
 
     if (AccessibilityObject* obj = get(widget))
         return obj;
 
     RefPtr<AccessibilityObject> newObj = 0;
     if (widget->isFrameView())
         newObj = AccessibilityScrollView::create(toScrollView(widget));
     else if (widget->isScrollbar())
-        newObj = AccessibilityScrollbar::create(static_cast<Scrollbar*>(widget));
+        newObj = AccessibilityScrollbar::create(toScrollbar(widget));
 
     // Will crash later if we have two objects for the same widget.
     ASSERT(!get(widget));
 
     getAXID(newObj.get());
 
     m_widgetObjectMapping.set(widget, newObj->axObjectID());
     m_objects.set(newObj->axObjectID(), newObj);
     newObj->init();
     attachWrapper(newObj.get());
@@ skipping 584 matching lines @@
 
 void AXObjectCache::attachWrapper(AccessibilityObject*)
 {
     // In Chromium, AccessibilityObjects are not wrapped.
 }
 
 void AXObjectCache::postPlatformNotification(AccessibilityObject* obj, AXNotification notification)
 {
     if (obj && obj->isAccessibilityScrollbar() && notification == AXValueChanged) {
         // Send document value changed on scrollbar value changed notification.
-        Scrollbar* scrollBar = static_cast<AccessibilityScrollbar*>(obj)->scrollbar();
+        Scrollbar* scrollBar = toAccessibilityScrollbar(obj)->scrollbar();
         if (!scrollBar || !scrollBar->parent() || !scrollBar->parent()->isFrameView())
             return;
         Document* document = toFrameView(scrollBar->parent())->frame().document();
         if (document != document->topDocument())
             return;
         obj = get(document->renderer());
     }
 
     if (!obj || !obj->document() || !obj->documentFrameView() || !obj->documentFrameView()->frame().page())
         return;
@@ skipping 30 matching lines @@
 void AXObjectCache::handleScrolledToAnchor(const Node* anchorNode)
 {
     // The anchor node may not be accessible. Post the notification for the
     // first accessible object.
     postPlatformNotification(AccessibilityObject::firstAccessibleObjectFromNode(anchorNode), AXScrolledToAnchor);
 }
 
 } // namespace WebCore
 
 #endif // HAVE(ACCESSIBILITY)