Use isHTMLTextAreaElement and toHTMLTextAreaElement

Source/core/accessibility/AccessibilityRenderObject.cpp

 /*
 * Copyright (C) 2008 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 1758 matching lines @@
         return;
     Node* node = m_renderer->node();
     frame->selection()->setSelection(VisibleSelection(Position(node, range.start, Position::PositionIsOffsetInAnchor),
         Position(node, range.start + range.length, Position::PositionIsOffsetInAnchor), DOWNSTREAM));
 }
 
 void AccessibilityRenderObject::setValue(const String& string)
 {
     if (!m_renderer || !m_renderer->node() || !m_renderer->node()->isElementNode())
         return;
-    Element* element = toElement(m_renderer->node());
-
     if (!m_renderer->isBoxModelObject())
         return;
     RenderBoxModelObject* renderer = toRenderBoxModelObject(m_renderer);
 
     // FIXME: Do we want to do anything here for ARIA textboxes?
     if (renderer->isTextField()) {
         // FIXME: This is not safe!  Other elements could have a TextField renderer.
-        toHTMLInputElement(element)->setValue(string);
+        toHTMLInputElement(m_renderer->node())->setValue(string);
     } else if (renderer->isTextArea()) {
         // FIXME: This is not safe!  Other elements could have a TextArea renderer.
-        static_cast<HTMLTextAreaElement*>(element)->setValue(string);
+        toHTMLTextAreaElement(m_renderer->node())->setValue(string);
     }
 }
 
 void AccessibilityRenderObject::scrollTo(const IntPoint& point) const
 {
     if (!m_renderer || !m_renderer->isBox())
         return;
 
     RenderBox* box = toRenderBox(m_renderer);
     if (!box->canBeScrolledAndHasScrollableArea())
@@ skipping 711 matching lines @@
         if (label && label->renderer()) {
             LayoutRect labelRect = axObjectCache()->getOrCreate(label)->elementRect();
             result.unite(labelRect);
         }
     }
 
     return result;
 }
 
 } // namespace WebCore