*** NOT FOR LANDING *** mapLocalToContainer and offsetFromContainer cleanup.

Source/core/editing/Caret.cpp

Index: Source/core/editing/Caret.cpp
diff --git a/Source/core/editing/Caret.cpp b/Source/core/editing/Caret.cpp
index 8b840276788d8792302f7f8522e67053c4336fa9..2ac419d21a0ab71a2331fbc91c6f032a825c90ba 100644
--- a/Source/core/editing/Caret.cpp
+++ b/Source/core/editing/Caret.cpp
@@ -152,7 +152,8 @@ static void mapCaretRectToCaretPainter(LayoutObject* caretLayoutObject, LayoutBl
             unrooted = true;
             break;
         }
-        caretRect.move(caretLayoutObject->offsetFromContainer(containerObject, caretRect.location()));
+        caretRect.move(caretLayoutObject->offsetFromContainer(containerObject));
+        caretRect.move(caretLayoutObject->columnOffset(caretRect.location())); // TODO(mstensho): do we need this? And what about the FIXME further above that suggests that we use mapLocalToContainer() instead?
         caretLayoutObject = containerObject;
     }