Introduce cros_display_config.mojom

This includes the implementation in ash, but no clients
(dependent CL will follow).

Bug: 682402
Change-Id: I9fe82f915f2b2ddacc29c27f039a47bc8b8a043b
Reviewed-on: https://chromium-review.googlesource.com/1011563
Commit-Queue: Steven Bennetts <[email protected]>
Reviewed-by: Mitsuru Oshima <[email protected]>
Reviewed-by: Ahmed Fakhry <[email protected]>
Reviewed-by: Malay Keshav <[email protected]>
Reviewed-by: Tom Sepez <[email protected]>
Cr-Commit-Position: refs/heads/master@{#554187}
10 files changed