These auto-generated deps are necessary for the standalone build.
Updates the roll script to start including these automatically.

Bug: angleproject:2344
Change-Id: I389c203a2ddb971e3aeccb728cf37e232f32031e
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2826479
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Yuly Novikov <ynovikov@chromium.org>