Complete EGL 1.5 entry point stubs. We were missing the entries in the def file, and we were missing two new entry point functions from the new header. This fixes linking against dEQP. BUG=angle:901 Change-Id: I56d35bb6e8f3bd9e26943eaec196034605e154fc Reviewed-on: https://chromium-review.googlesource.com/244444 Reviewed-by: Geoff Lang <geofflang@chromium.org> Tested-by: Jamie Madill <jmadill@chromium.org>