gl_tests: Fix formatting "git cl format" updated some formatting in code unrelated to the change set. Bug: None Change-Id: I4f63db03328356964c2e7c3a9785affa1078a82b Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3613919 Reviewed-by: Jamie Madill <jmadill@chromium.org> Commit-Queue: Gert Wollny <gert.wollny@collabora.com>