Clarify code around setting uniform locations Use the name "uniformLocationBindings" for location information set by the API instead of "uniformBindings", which can be easily confused with binding layout qualifiers that can be set for some types of uniforms. Also use more straightforward names throughout the indexUniforms function. BUG=angleproject:1442 Change-Id: I47d504479b36def696305f060e9c9bd3de3ade48 Reviewed-on: https://chromium-review.googlesource.com/445236 Reviewed-by: Corentin Wallez <cwallez@chromium.org> Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>