Make first-letter style to work with editing

Source/core/editing/ReplaceSelectionCommand.cpp

Index: Source/core/editing/ReplaceSelectionCommand.cpp
diff --git a/Source/core/editing/ReplaceSelectionCommand.cpp b/Source/core/editing/ReplaceSelectionCommand.cpp
index af2d6612c07395ca402293ce47fed3547dcfab5b..92f95b737e860a096e39323a89948db1a4ce3943 100644
--- a/Source/core/editing/ReplaceSelectionCommand.cpp
+++ b/Source/core/editing/ReplaceSelectionCommand.cpp
@@ -895,8 +895,8 @@ void ReplaceSelectionCommand::doApply()
         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) {