QA:Backwards Compat Grid

Build 646 on radio-to-core
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The baseline is shorter than the new snapshot (1032x710 to 1032x718).
Baseline History
Build 646bbe3179 current baseline
Current build. Accepted by Zhihao Cui.
Build 6435321e18
Accepted by Zhihao Cui.
Build 6080f9dfa0
Accepted by Zhihao Cui.
Build 5894d6abe4
Auto-accepted
Build 5582742588
Accepted by Zhihao Cui.
Commenting is disabled because there's a newer build on this branch