Revert "Disable flaky SitePerProcessHighDPIHitTestBrowserTest on TSAN."

This reverts commit 4ff783302bcd4c8779d6ee95e2e4a036a55f9f13.

Reason for revert: Broke the build.

Original change's description:
> Disable flaky SitePerProcessHighDPIHitTestBrowserTest on TSAN.
> 
> BUG=833380
> TBR=mcnee@chromium.org
> NOTRY=true
> 
> Change-Id: Ia38901113736af2fa923c301769282e834d531c3
> Reviewed-on: https://chromium-review.googlesource.com/1026830
> Reviewed-by: Lei Zhang <thestig@chromium.org>
> Commit-Queue: Lei Zhang <thestig@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#553322}

TBR=thestig@chromium.org,mcnee@chromium.org

Change-Id: Ic390442ee654a5ad8a8c4076843d64f461fdb6f5
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 833380
Reviewed-on: https://chromium-review.googlesource.com/1026435
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
Cr-Commit-Position: refs/heads/master@{#553332}
1 file changed