BarChart:Height label constrained to right

Build 620 on support-extra-label-on-toggle
1200px
Reviewing disabled
Baseline History
Build 6208266660
Current build. There are unaccepted changes, so build 613 is still the baseline.
Build 611f2a3d70
Auto-accepted
Build 608cb4e94c
Accepted by Steven Hicks.
Build 603f30f221
Auto-accepted
Commenting is disabled because there's a newer build on this branch