QA:Backwards Compat Grid

Build 610 on layer-layout-component
1200px
Reviewing disabled
Baseline History
Build 6107ccc26b
Current build. There are unaccepted changes, so build 608 is still the baseline.
Build 6080f9dfa0 current baseline
Accepted by Zhihao Cui.
Build 5894d6abe4
Auto-accepted
Build 5582742588
Accepted by Zhihao Cui.
Build 474d586960
Accepted by Alina Visan.
Commenting is disabled because there's a newer build on this branch