QA:Backwards Compat Grid

Build 669 on content-status-add-typography
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Baseline History
Build 66959f61a0
Current build. There are unaccepted changes, so build 643 is still the baseline.
Build 6435321e18 current baseline
Accepted by Zhihao Cui.
Build 624b10b5d1
Auto-accepted
Build 613ea80d88
Accepted by Zhihao Cui.
Build 584b6116c2
Accepted by Alina Visan.
Commenting is disabled because there's a newer build on this branch