Introduce absoluteCaretBoundsOf() for VisiblePosition

Source/core/editing/VisiblePosition.cpp

Index: Source/core/editing/VisiblePosition.cpp
diff --git a/Source/core/editing/VisiblePosition.cpp b/Source/core/editing/VisiblePosition.cpp
index d4628c13a3cfef270a4c743617beb6ab68f547d8..d0606a912b63ed387efb28e23a2ae57f2fadd7fc 100644
--- a/Source/core/editing/VisiblePosition.cpp
+++ b/Source/core/editing/VisiblePosition.cpp
@@ -692,10 +692,10 @@ LayoutRect VisiblePosition::localCaretRect(LayoutObject*& layoutObject) const
     return localCaretRectOfPosition(positionWithAffinity, layoutObject);
 }
 
-IntRect VisiblePosition::absoluteCaretBounds() const
+IntRect absoluteCaretBoundsOf(const VisiblePosition& visiblePosition)
 {
     LayoutObject* layoutObject;
-    LayoutRect localRect = localCaretRect(layoutObject);
+    LayoutRect localRect = visiblePosition.localCaretRect(layoutObject);
     if (localRect.isEmpty() || !layoutObject)
         return IntRect();