Re-enable SitePerProcessHitTestBrowserTest.TouchpadPinchOverOOPIF on Windows

The work done in crbug.com/833380 to address flakiness in
SitePerProcessHitTestBrowserTests likely resolves the source of flakiness
for this test.

Bug: 833380
Change-Id: Idd54686f2ad3294ae9daca4faf43945dc428afb0
Reviewed-on: https://chromium-review.googlesource.com/1236835
Reviewed-by: Ken Buchanan <kenrb@chromium.org>
Commit-Queue: Kevin McNee <mcnee@chromium.org>
Cr-Commit-Position: refs/heads/master@{#593615}
2 files changed