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HostedAppAshInteractiveUITest.MenuButtonClickable is flaky with
SingleProcessMash, and I think it could be the case of unstable
mouse location. When mouse move events occur during the test,
then the last mouse location could change and then further
mouse clicks occur on an unexpected location.

UIControlsFactoryOzone can remember the last specified location
and can use the remembered location for clicks. This will
stabilize the HostedAppAshInteractiveUITest.MenuButtonClickable,
and I hope others will get benefits.

BUG=890953
TEST=locally interactive_ui_tests --enable-features=SingleProcessMash

Change-Id: I3542a5a961dd4e7e8819e924d1d0c170c4dfaff1
Reviewed-on: https://chromium-review.googlesource.com/c/1255607
Commit-Queue: Jun Mukai <mukai@chromium.org>
Reviewed-by: Scott Violet <sky@chromium.org>
Cr-Commit-Position: refs/heads/master@{#596034}