VideoBlockEditor:Poster Modal

Build 1825 on 22-03-JG-fix-hide-progress-bar
360px
Reviewing disabled
Baseline History
Build 1825f117c8f
Current build. There are unaccepted changes, so build 1773 is still the baseline.
Build 1698d892b39
Accepted by Siyang Cao.
Build 1691de1cb44
Accepted by Tataihono Nikora.
Build 1689adc9219
Accepted by Tataihono Nikora.
Commenting is disabled because there's a newer build on this branch