Created attachment 69838 [details]
The follow tests fail:
We pass 015.htm now. We fail 007.htm because we need to implement baselinePosition for inline-tables. It just falls through to RenderBlock's, which does not do the right thing.
CSS2.1 states that the baseline of an inline-table is the baseline of the first row of the table, so we need to just add a baselinePosition method that returns that.