Now that the new platform is in place, we can remove the old methods. Must be landed after https://codereview.chromium.org/2697463003/ BUG=angleproject:1892 BUG=chromium:678870 Change-Id: Ia29a3b120cf3521fc0409019c2e64e4dbc6f460d Reviewed-on: https://chromium-review.googlesource.com/441274 Commit-Queue: Jamie Madill <jmadill@chromium.org> Reviewed-by: Corentin Wallez <cwallez@chromium.org>
