De-flake native-popup-with-datalist
I was able to reproduce the flake which was happening because sometimes
the button was still focused. I fixed it by blurring the focused element
and adding a rAF.
Fixed: 334122678
Change-Id: Iede088900b888ab32c3a9554d5c6fc83b980ccc2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5530688
Reviewed-by: Di Zhang dizhangg@chromium.org
Commit-Queue: Joey Arhar jarhar@chromium.org
Cr-Commit-Position: refs/heads/main@{#1300308}