Make VisiblePosition constructor private

Source/core/editing/commands/InsertTextCommand.cpp

Index: Source/core/editing/commands/InsertTextCommand.cpp
diff --git a/Source/core/editing/commands/InsertTextCommand.cpp b/Source/core/editing/commands/InsertTextCommand.cpp
index f750b1abbce6bf56a07495605c7abfd117d69d9d..75792cc2b2ef7819855130b1d758f732f5b21f10 100644
--- a/Source/core/editing/commands/InsertTextCommand.cpp
+++ b/Source/core/editing/commands/InsertTextCommand.cpp
@@ -159,7 +159,7 @@ void InsertTextCommand::doApply()
     Position downstream(mostForwardCaretPosition(startPosition));
     if (lineBreakExistsAtPosition(downstream)) {
         // FIXME: This doesn't handle placeholders at the end of anonymous blocks.
-        VisiblePosition caret(startPosition);
+        VisiblePosition caret = createVisiblePosition(startPosition);
         if (isEndOfBlock(caret) && isStartOfParagraph(caret))
             placeholder = downstream;
         // Don't remove the placeholder yet, otherwise the block we're inserting into would collapse before
@@ -233,7 +233,7 @@ void InsertTextCommand::doApply()
 
 Position InsertTextCommand::insertTab(const Position& pos)
 {
-    Position insertPos = VisiblePosition(pos).deepEquivalent();
+    Position insertPos = createVisiblePosition(pos).deepEquivalent();
     if (insertPos.isNull())
         return pos;