GitLab

These three tests appear to be flaking regularly on this
OS, so disabling in this CL.

TBR=dmazzoni,aboxhall

Bug: 986673
Change-Id: Ie89fe2fc3176042544dbce5ef1bfe1302abdf9d3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1714296
Commit-Queue: Ian Vollick <vollick@chromium.org>
Reviewed-by: Ian Vollick <vollick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#679866}