Log the fully formatted message for internal errors. The formatted message is generated but not used. This is critical to know the file and line that generated the error. Bug: chromium:983167 Change-Id: Id4bb1c5b49fa1004728948d87e0270687b82992c Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3690738 Reviewed-by: Jamie Madill <jmadill@chromium.org> Commit-Queue: Geoff Lang <geofflang@chromium.org>