Cleanup: Start using toFoo methods as part of newly adopted coding guideline.

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 299 matching lines @@
 AccessibilityObject* AXObjectCache::getOrCreate(Widget* widget)
 {
     if (!widget)
         return 0;
 
     if (AccessibilityObject* obj = get(widget))
         return obj;
 
     RefPtr<AccessibilityObject> newObj = 0;
     if (widget->isFrameView())
-        newObj = AccessibilityScrollView::create(static_cast<ScrollView*>(widget));
+        newObj = AccessibilityScrollView::create(toScrollView(widget));
     else if (widget->isScrollbar())
         newObj = AccessibilityScrollbar::create(static_cast<Scrollbar*>(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);
@@ skipping 297 matching lines @@
         if (!obj->axObjectID())
             continue;
 
         if (!obj->axObjectCache())
             continue;
 
 #ifndef NDEBUG
         // Make sure none of the render views are in the process of being layed out.
         // Notifications should only be sent after the renderer has finished
         if (obj->isAccessibilityRenderObject()) {
-            AccessibilityRenderObject* renderObj = static_cast<AccessibilityRenderObject*>(obj);
+            AccessibilityRenderObject* renderObj = toAccessibilityRenderObject(obj);
             RenderObject* renderer = renderObj->renderer();
             if (renderer && renderer->view())
                 ASSERT(!renderer->view()->layoutState());
         }
 #endif
 
         AXNotification notification = m_notificationsToPost[i].second;
         postPlatformNotification(obj, notification);
 
         if (notification == AXChildrenChanged && obj->parentObjectIfExists() && obj->lastKnownIsIgnoredValue() != obj->accessibilityIsIgnored())
@@ skipping 319 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)