[ozone/wayland] Override kEnableOzoneDrmMojo to enabled by default.

Ozone/Wayland relies on the mojo communication when running in the
!single_process mode. Thus, to avoid messing up with ifdefs in the
features::IsOzoneDrmMojo(), override the feature in the
OzonePlatformWayland::InitializeUI if the !single_process condition is
true.

Bug: 578890
Change-Id: I8d1515cae2fc117dd171d3ca3443c9a098192985
Reviewed-on: https://chromium-review.googlesource.com/1228999
Commit-Queue: Maksim Sisov <msisov@igalia.com>
Reviewed-by: Robert Kroeger <rjkroege@chromium.org>
Reviewed-by: Avi Drissman <avi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#594235}
2 files changed