GitLab

Version 2 additions:

- set_parent request that can be used to provide an initial position
  relative to parent for shell surfaces.

- zaura_output extension to wl_output that provides detailed
  information about supported scale factors.

Test: compile
Bug: 
Change-Id: I00aebee4475a7004db84f6f0e2cb5d41d8a823da
Reviewed-on: https://chromium-review.googlesource.com/804354
Commit-Queue: David Reveman <reveman@chromium.org>
Reviewed-by: Daniele Castagna <dcastagna@chromium.org>
Cr-Commit-Position: refs/heads/master@{#521077}