GitLab

Refactor: Move finding a primary plane for Test Modeset or Commit Modeset early on
so the plane args could be extended and manipulated in tests, and test
would fail quick on failure to find a plane.

BUG: 979736
TEST: Test & Commit succeeds.
Change-Id: I88de210a59dba67912227a94f542ccff7f771e36
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2505938Reviewed-by: Daniel Nicoara <dnicoara@chromium.org>
Commit-Queue: Mark Yacoub <markyacoub@google.com>
Cr-Commit-Position: refs/heads/master@{#822643}