Replace gl::trace logging with Chromium style logging Removing one usage of FormatString() and its static buffer. And preparation for Platform logging. BUG=angleproject:1660 Change-Id: I58192988ad16196706fe48d0c0ab0fd1a10c0210 Reviewed-on: https://chromium-review.googlesource.com/424173 Reviewed-by: Corentin Wallez <cwallez@chromium.org> Commit-Queue: Yuly Novikov <ynovikov@chromium.org>