we need tree, treegrid and treeitem
treegrid is separate and will appear as a table, since its supposed to be more like a grid.
this bug i will use just for
Created attachment 42928 [details]
Unfortunately getting an AXOutline to work on the mac is quite a bit of work, as it supports a lot of unique attributes and does some weird things with its children (as in, all rows are reported by the AXOutline regardless of level)
i also had to fix some attributes in DRT that were returning JSValueNumber instead of JSValueBoolean, which meant fixing some LayoutTests.
Comment on attachment 42928 [details]
I suspect AccessibilityObject::ariaTreeRows can be made to crash if I make a sufficiently deep tree, i don't think we need to worry about this now, but it's worth considering.
The change to AccessibilityRenderObject::accessibilityIsIgnored seems unnecessary, i say remove it :D
thanx for the review. will commit tonight when i have time to monitor the submisson