GitLab

Enabling and disabling displays share a lot of code that it's safe to
combine them.
The intention is to pass all displays bundled and go through the same
path to be configured together.

BUG=1082882
TEST=no changes enabling and disabling displays.

Change-Id: Ibfefa497fab863315bb36f58586ac23bb402a431
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2245173Reviewed-by: Daniel Nicoara <dnicoara@chromium.org>
Reviewed-by: Robert Sesek <rsesek@chromium.org>
Commit-Queue: Mark Yacoub <markyacoub@google.com>
Cr-Commit-Position: refs/heads/master@{#779418}