Remove extra angle:: uses from ANGLEPestTest.cpp. Bug: None Change-Id: I7101398504c547b97b9184c56b252bef5198cecb Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3067510 Reviewed-by: Jamie Madill <jmadill@chromium.org> Commit-Queue: Jamie Madill <jmadill@chromium.org>