The ozone backend will no longer fail if it is unable to display on
screen for any reason.  It no longer assumes it can control the first
screen it finds.

BUG=angleproject:1423

Change-Id: I5d5274c54b1bc6de50e704903391bf6161efa487
Reviewed-on: https://chromium-review.googlesource.com/445805
Commit-Queue: Frank Henigman <fjhenigman@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>