mathml/presentation/mo.xhtml and mathml/presentation/row.xhtml started failing on Apple Lion Release WK1 (Tests) between r122661 and r122663 (inclusive).
The Mac bots don't run pixel tests - would it be possible to see the image diff of these failing tests? (Chromium linux doesn't fully support mathml as far as I can tell).
Sure, let me run one from both revisions.
Created attachment 153107 [details]
mathml/ LayoutTest results
The new layout is closer to Firefox - i.e. the baseline of each green box is near the middle of the parentheses. I think the change in result here is due to the test depending on the old, wrong behaviour of vertical-align with a percentage value.
Created attachment 153111 [details]
This shows the new behaviour of vertical-align with a negative percentage. WebKit's current rendering of this matches Firefox and Opera, whereas its old rendering does not.
Created attachment 153113 [details]
So, I would say it's safe to rebaseline. Don't know if you want anyone else to chime in on it.
I'll land the new results tomorrow if no-one objects.
Comment on attachment 153113 [details]
Created attachment 153117 [details]
Comment on attachment 153117 [details]
Committed r123039: <http://trac.webkit.org/changeset/123039>