rs=smaug on the webidl change IGNORE IDL due to only adding a const --HG-- extra : commitid : zI9Hpg9cZ6 extra : rebase_source : 8a2bf373dd9ed2c08ef9229ccd7dfff4fe1b30f7 extra : histedit_source : e0b5ba801b8c9912378e90779c42e99f4604276d
--HG-- rename : layout/xul/tree/nsITreeColumns.idl => dom/webidl/TreeColumn.webidl