Use ProgramPipelineID in place of GLuint handle Bug: angleproject:3804 Change-Id: Ice37a4b3d43008e5bcd5d0a7528514d5bb504066 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1767322 Reviewed-by: Jiacheng Lu <lujc@google.com> Commit-Queue: Jiacheng Lu <lujc@google.com>