Test for bug 827190
Set AncestorHasDirAuto on descendants of a node being bound to an element with HasDirAuto or AncestorHasDirAuto. Bug 827190, r=ehsan, a=bajaj
Test for bug 828054
Remove aStartAfterNode from WalkDescendantsSetDirectionFromText. Bug 828054, r=ehsan, a=bajaj