Correct a typo that was keeping Skia from compiling. For example: https://logs.chromium.org/logs/skia/5948b4721f002c11/+/steps/gn_gen/0/stdout. More specifically: https://logs.chromium.org/logs/skia/5948b4721f002c11/+/steps/gn_gen/0/stdout. Bug crept in on https://chromium-review.googlesource.com/c/angle/angle/+/3487449. Bug: angleproject:7061 Change-Id: I6bae23375505aa714733033f5b84c1b3c8c421f9 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3488558 Reviewed-by: Jamie Madill <jmadill@chromium.org> Commit-Queue: Jamie Madill <jmadill@chromium.org>