Add test for primitive state change Bug: angleproject:5906 Change-Id: Iacae148dbf8d2be08f352d5ccc4a727e6c5247e8 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3668831 Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org> Reviewed-by: Yuxin Hu <yuxinhu@google.com>