QA:Lots Of Tabs Tabstrip

Build 12099 on tabs-next-updates
1200px
Reviewing disabled
Baseline History
Build 1209999dc728
Current build. There are unaccepted changes, so build 11058 is still the baseline.
Build 110484673a0b
Accepted by Liberty Curtis.
Build 11026abd8a54
Accepted by Liberty Curtis.
Build 10765ac1636a
Accepted by Fernanda Castillo.
Commenting is disabled because there's a newer build on this branch