Add non-updatable-api tracking

This adds stub generation for the non-updatable part of the platform.

This is a partial cherry pick of
I255486112c03f237aa342cfb93f3b473a2f50470

Test: m (checkapi)
Merged-In: I255486112c03f237aa342cfb93f3b473a2f50470
Change-Id: I914c416e171253dacfa3c6d44ae4ef1ea6530a46
8 files changed