Gets the #WebKitContextMenuAction of @item. If the #WebKitContextMenuItem was not
created for a stock action %WEBKIT_CONTEXT_MENU_ACTION_CUSTOM will be
returned. If the #WebKitContextMenuItem is a separator %WEBKIT_CONTEXT_MENU_ACTION_NO_ACTION
will be returned.
Gets the #WebKitContextMenuAction of @item. If the #WebKitContextMenuItem was not created for a stock action %WEBKIT_CONTEXT_MENU_ACTION_CUSTOM will be returned. If the #WebKitContextMenuItem is a separator %WEBKIT_CONTEXT_MENU_ACTION_NO_ACTION will be returned.