Creates a new #WebKitContextMenuItem for the given stock action using the given label.
Stock actions have a predefined label, this method can be used to create a #WebKitContextMenuItem for a #WebKitContextMenuAction but using a custom label.
a #WebKitContextMenuAction stock action
a custom label text to use instead of the predefined one
the newly created #WebKitContextMenuItem object.
Creates a new #WebKitContextMenuItem for the given stock action using the given label.
Stock actions have a predefined label, this method can be used to create a #WebKitContextMenuItem for a #WebKitContextMenuAction but using a custom label.