ConvertVertex's UintToUint and HalfFloatToHalfFloat were generating identical shaders. Bug: angleproject:3802 Change-Id: I8eb2d55debbc5501f191830a2723b02d0d1f0827 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1925248Reviewed-by: Tim Van Patten <timvp@google.com> Reviewed-by: Hyunchang Kim <hckim.kim@samsung.com> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
