merge_pr_2

[wpt] Enable experimental features for Edge Canary

PR web-platform-tests#16920 added Edge Dev & Canary to Azure but only enabled experimental
web platform features for Dev.

merge_pr_1

Add space for vertical align

Change-Id: I10c84de98370c27530d77d37a5f6b8f62404df22
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1930456
Reviewed-by: Xida Chen xidachen@chromium.org
Commit-Queue: Hao Sheng haozhes@chromium.org
Cr-Commit-Position: refs/heads/master@{#718227}