The fixes require a few changes in ANGLE to support the build. Will
upstream them to Khronos once its proved they can run the GLES 1.0
tests correctly.

Bug: angleproject:3979
Change-Id: I74ff0cfa8ccc1bc903517a67d26352c4801e6355
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1845471Reviewed-by: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Lingfeng Yang <lfy@google.com>
Commit-Queue: Jamie Madill <jmadill@chromium.org>