These cases weren't actually ever hit within ANGLE.

BUG=angleproject:1455

Change-Id: I60da3fb9eae91598ddaed5572a4bab0a66345694
Reviewed-on: https://chromium-review.googlesource.com/367691Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>