The auto-gen loader code should be able to handle all these cases.

Bug: angleproject:3393
Change-Id: If0a90fb29d79f2892fdf76fe0cb91ed0036ee1e3
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1756083
Commit-Queue: Courtney Goeltzenleuchter <courtneygo@google.com>
Reviewed-by: Courtney Goeltzenleuchter <courtneygo@google.com>