GitLab

Similar to https://chromium-review.googlesource.com/c/chromium/src/+/1173437
this patch updates autoscroll-iframe-no-scrolling.html to have timeout pass as
expectations.

TBR=hayato@chromium.org

Bug: 873829
Change-Id: Ib534bc8d45b487888c6f75033241786aba768878
Reviewed-on: https://chromium-review.googlesource.com/1183461Reviewed-by: Jonathan Ross <jonross@chromium.org>
Commit-Queue: Jonathan Ross <jonross@chromium.org>
Cr-Commit-Position: refs/heads/master@{#584760}