GitLab

Update webui tab counter animation to more closely match spec.

The deficiency from spec is the bounciness in the border returning to
its start position - it should be more springlike, overshooting and
then returning, maybe more than once.

Bug: 1024009
Change-Id: Ibd374ed742fba7aa18705c744ec7420af58274c7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1992207
Commit-Queue: Taylor Bergquist <tbergquist@chromium.org>
Reviewed-by: Peter Boström <pbos@chromium.org>
Cr-Commit-Position: refs/heads/master@{#732530}