[iOS] Reenable ManualTextFramerTest.OriginRTLTest.

This was only flaky on iOS9 devices, but iOS9 is no longer supported.
I ran this test several hundred times locally on an iOS11 device with
no flake.

Bug: 780824
Cq-Include-Trybots: master.tryserver.chromium.mac:ios-simulator-cronet;master.tryserver.chromium.mac:ios-simulator-full-configs
Change-Id: I61b33e8cb3c0e4dab760b75361649fda56b4e6a1
Reviewed-on: https://chromium-review.googlesource.com/802082
Reviewed-by: Kurt Horimoto <kkhorimoto@chromium.org>
Reviewed-by: Eugene But <eugenebut@chromium.org>
Commit-Queue: Kurt Horimoto <kkhorimoto@chromium.org>
Cr-Commit-Position: refs/heads/master@{#520743}
1 file changed