GitLab

This is cleaned up replacement for the functionality provided by
"surfaceless" GLSurface implementations that present to platform windows
(i.e. objects returned from CreateSurfacelessViewGLSurface()).

It is intended for use with vulkan although it currently does not currently
have any dependencies on any vulkan APIs.

Bug: 1097208
Test: ozone_demo --enable-vulkan on eve (with full series)

Change-Id: Ie5318e848f804c8b9f8fbc78372016286d0c3e6b
Reviewed-on: https://chromium-review.googlesource.com/1104864
Commit-Queue: Michael Spang <spang@chromium.org>
Reviewed-by: Robert Kroeger <rjkroege@chromium.org>
Reviewed-by: Antoine Labour <piman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#570174}