Introduce toHTMLInputElement(Node*), and use it.

Source/WebKit/chromium/src/ContextMenuClientImpl.cpp

 /*
  * Copyright (C) 2009, 2012 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 276 matching lines @@
     // Send the frame and page URLs in any case.
     data.pageURL = urlFromFrame(m_webView->mainFrameImpl()->frame());
     if (selectedFrame != m_webView->mainFrameImpl()->frame()) {
         data.frameURL = urlFromFrame(selectedFrame);
         RefPtr<HistoryItem> historyItem = selectedFrame->loader()->history()->currentItem();
         if (historyItem)
             data.frameHistoryItem = WebHistoryItem(historyItem);
     }
 
     if (r.isSelected()) {
-        if (!r.innerNonSharedNode()->hasTagName(HTMLNames::inputTag) || !static_cast<HTMLInputElement*>(r.innerNonSharedNode())->isPasswordField())
+        if (!r.innerNonSharedNode()->hasTagName(HTMLNames::inputTag) || !toHTMLInputElement(r.innerNonSharedNode())->isPasswordField())
             data.selectedText = selectedFrame->editor()->selectedText().stripWhiteSpace();
     }
 
     if (r.isContentEditable()) {
         data.isEditable = true;
 #if ENABLE(INPUT_SPEECH)
-        if (r.innerNonSharedNode()->hasTagName(HTMLNames::inputTag)) {
-            data.isSpeechInputEnabled = 
-                static_cast<HTMLInputElement*>(r.innerNonSharedNode())->isSpeechEnabled();
-        }  
+        if (r.innerNonSharedNode()->hasTagName(HTMLNames::inputTag))
+            data.isSpeechInputEnabled = toHTMLInputElement(r.innerNonSharedNode())->isSpeechEnabled();
 #endif
         // When Chrome enables asynchronous spellchecking, its spellchecker adds spelling markers to misspelled
         // words and attaches suggestions to these markers in the background. Therefore, when a user right-clicks
         // a mouse on a word, Chrome just needs to find a spelling marker on the word instead of spellchecking it.
         if (selectedFrame->settings() && selectedFrame->settings()->asynchronousSpellCheckingEnabled()) {
             DocumentMarker marker;
             data.misspelledWord = selectMisspellingAsync(selectedFrame, marker);
             data.misspellingHash = marker.hash();
             if (marker.description().length()) {
                 Vector<String> suggestions;
@@ skipping 14 matching lines @@
                     m_webView->spellCheckClient()->spellCheck(
                         data.misspelledWord, misspelledOffset, misspelledLength,
                         &data.dictionarySuggestions);
                     if (!misspelledLength)
                         data.misspelledWord.reset();
                 }
             }
         }
         HTMLFormElement* form = selectedFrame->selection()->currentForm();
         if (form && r.innerNonSharedNode()->hasTagName(HTMLNames::inputTag)) {
-            HTMLInputElement* selectedElement = static_cast<HTMLInputElement*>(r.innerNonSharedNode());
+            HTMLInputElement* selectedElement = toHTMLInputElement(r.innerNonSharedNode());
             if (selectedElement) {
                 WebSearchableFormData ws = WebSearchableFormData(WebFormElement(form), WebInputElement(selectedElement));
                 if (ws.url().isValid())
                     data.keywordURL = ws.url();
             }
         }
     }
 
 #if OS(DARWIN)
     if (selectedFrame->editor()->selectionHasStyle(CSSPropertyDirection, "ltr") != FalseTriState)
@@ skipping 56 matching lines @@
         outputItems[i] = subItems[i];
     subMenuItems.swap(outputItems);
 }
 
 void ContextMenuClientImpl::populateCustomMenuItems(const WebCore::ContextMenu* defaultMenu, WebContextMenuData* data)
 {
     populateSubMenuItems(defaultMenu->items(), data->customItems);
 }
 
 } // namespace WebKit