GitLab

Previously --disable-gpu process was passed to context process
to prevent it from starting GPU process. It no longer disables
GPU process, but GPU process should not crash once
https://crrev.com/r/1178754 lands.

Bug: 867052, 874533
Change-Id: If2baf7aa50dd9ccb6ee5442d079f50c1908ed72c
Reviewed-on: https://chromium-review.googlesource.com/1178881
Commit-Queue: Sergey Ulanov <sergeyu@chromium.org>
Reviewed-by: Kevin Marshall <kmarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#584794}