Use isHTMLTextAreaElement and toHTMLTextAreaElement

Source/core/accessibility/AccessibilityRenderObject.cpp

Index: Source/core/accessibility/AccessibilityRenderObject.cpp
diff --git a/Source/core/accessibility/AccessibilityRenderObject.cpp b/Source/core/accessibility/AccessibilityRenderObject.cpp
index bb5bf1e4d3c2090368419956975866ec0701fa2e..094a0d10824aa27c95c8393380b37bcf5e2b0515 100644
--- a/Source/core/accessibility/AccessibilityRenderObject.cpp
+++ b/Source/core/accessibility/AccessibilityRenderObject.cpp
@@ -1776,8 +1776,6 @@ 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);
@@ -1785,10 +1783,10 @@ void AccessibilityRenderObject::setValue(const String& string)
     // 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);
     }
 }