GridLayout:Toolkit Grid Layout Multiple Rows

Build 240 on gap-defaults-update
1200px
Reviewing disabled
The baseline is larger than the new snapshot (876x609 to 828x577).
Baseline History
Build 2407cf5f65
Current build. There are unaccepted changes, so build 16 is still the baseline.
Build 16035ab45 current baseline
Accepted by Zhihao Cui.
Build 1cf98200
Auto-accepted
Commenting is disabled because there's a newer build on this branch