GitLab

When running on top of ANGLE, ES2 contexts are often used because the
exact context version requested is returned.

BUG=989194

Change-Id: Iedd673a7c5bee7a291991145f3f7d30552b34d54
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1727169Reviewed-by: ccameron <ccameron@chromium.org>
Reviewed-by: Kenneth Russell <kbr@chromium.org>
Commit-Queue: Geoff Lang <geofflang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#702006}