BarChart:Height label constrained to left

Build 620 on support-extra-label-on-toggle
1200px
Reviewing disabled
Baseline History
Build 6208266660
Current build. There are unaccepted changes, so build 617 is still the baseline.
Build 612868a297
Accepted by Christopher Pappas.
Build 608cb4e94c
Accepted by Steven Hicks.
Build 5980d736f9
Auto-accepted
Commenting is disabled because there's a newer build on this branch