Implement new API/interface for the ANGLE feature-support utility. The original API is designated as version 0. The new API is designated as version 1. A new function is provided for determing the version of the API that can be used. Bug: angleproject:2794 Change-Id: I8205b462522cbc34d31643ea14815e187497abed Reviewed-on: https://chromium-review.googlesource.com/c/1278836 Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Courtney Goeltzenleuchter <courtneygo@google.com> Commit-Queue: Ian Elliott <ianelliott@google.com>