Migrate a few gl_unittests jobs to Quadro P400s.

These JSON entries aren't managed by the generate_buildbot_json
script.

BUG=781867
TBR=dpranke@chromium.org
NOTRY=true

Change-Id: Iec3c624b27b1ad37e2be9cdfdd34458d7e44d43d
Reviewed-on: https://chromium-review.googlesource.com/756438
Reviewed-by: Kenneth Russell <kbr@chromium.org>
Reviewed-by: Dirk Pranke <dpranke@chromium.org>
Commit-Queue: Kenneth Russell <kbr@chromium.org>
Cr-Commit-Position: refs/heads/master@{#514360}
3 files changed