Skip virtual/user-activation-v2/fast/events/middleClickAutoscroll-event-fired.html

Just as flaky as when run inside virtual/mouseevent_fractional/ , which
is already skipped? Disable this virtual version of the test as well.

TBR=mustaq@google.com

Bug: 891155
Change-Id: Iba4400551dadb781e1650c4a948b977c823208b4
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/1377433
Reviewed-by: Morten Stenshorne <mstensho@chromium.org>
Commit-Queue: Morten Stenshorne <mstensho@chromium.org>
Cr-Commit-Position: refs/heads/master@{#616625}
1 file changed