This initial implementation provides the extension, and always answers
that the ANativeWindow is not recordable.

BUG=angleproject:2511

Change-Id: Id3c57351dd1029bff7adf7166f9c82eee6e634b3
Reviewed-on: https://chromium-review.googlesource.com/c/1412507
Commit-Queue: Ian Elliott <ianelliott@google.com>
Reviewed-by: Geoff Lang <geofflang@chromium.org>