Use 'gyp' dir in update_canary_angle.py. The old 'build' dir was copying stale DLLs. BUG=angleproject:1569 Change-Id: Ib11fb9f1e1e480fe32af3f291357e0fb92429318 Reviewed-on: https://chromium-review.googlesource.com/411389 Reviewed-by: Geoff Lang <geofflang@chromium.org> Reviewed-by: Corentin Wallez <cwallez@chromium.org> Commit-Queue: Jamie Madill <jmadill@chromium.org>