Inserts item into the menu at the given position.
If position is negative, or is larger than the number of items in the #WebKitContextMenu, the item is added on to the end of the menu. The first position is 0.
the #WebKitContextMenuItem to add
the position to insert the item
Inserts item into the menu at the given position.
If position is negative, or is larger than the number of items in the #WebKitContextMenu, the item is added on to the end of the menu. The first position is 0.