Use FramebufferID in place of GLuint handle Bug: angleproject:3804 Change-Id: I5e1b5f1903b05a91468379e00ec130802315cdc2 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1769039 Reviewed-by: Jiacheng Lu <lujc@google.com> Commit-Queue: Jiacheng Lu <lujc@google.com>