Use ShaderProgramID in place of GLuint handles Bug: angleproject:3804 Change-Id: I5dc640004c2cc054c53261e8e939b6a9f5fc23bb Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1762363 Commit-Queue: Jiacheng Lu <lujc@google.com> Reviewed-by: Tobin Ehlis <tobine@google.com>