Make first-letter style to work with editing

Source/core/editing/ReplaceSelectionCommand.cpp

 /*
  * Copyright (C) 2005, 2006, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2009, 2010, 2011 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:
  * 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 877 matching lines @@
         return;
 
     if (!selection.rootEditableElement())
         return;
 
     ReplacementFragment fragment(document(), m_documentFragment.get(), selection);
     if (performTrivialReplace(fragment))
         return;
 
     // We can skip matching the style if the selection is plain text.
-    if ((selection.start().deprecatedNode()->renderer() && selection.start().deprecatedNode()->renderer()->style()->userModify() == READ_WRITE_PLAINTEXT_ONLY)
-        && (selection.end().deprecatedNode()->renderer() && selection.end().deprecatedNode()->renderer()->style()->userModify() == READ_WRITE_PLAINTEXT_ONLY))
+    if ((selection.start().renderer() && selection.start().renderer()->style()->userModify() == READ_WRITE_PLAINTEXT_ONLY)
+        && (selection.end().renderer() && selection.end().renderer()->style()->userModify() == READ_WRITE_PLAINTEXT_ONLY))
         m_matchStyle = false;
 
     if (m_matchStyle) {
         m_insertionStyle = EditingStyle::create(selection.start());
         m_insertionStyle->mergeTypingStyle(document());
     }
 
     VisiblePosition visibleStart = selection.visibleStart();
     VisiblePosition visibleEnd = selection.visibleEnd();
 
@@ skipping 577 matching lines @@
         removeNodeAndPruneAncestors(nodeAfterInsertionPos.get());
 
     VisibleSelection selectionAfterReplace(m_selectReplacement ? start : end, end);
 
     setEndingSelection(selectionAfterReplace);
 
     return true;
 }
 
 } // namespace WebCore