Merge "Add doc stubs target that uses module stub source" into...

Merge "Add doc stubs target that uses module stub source" into stage-aosp-master am: e18d9714 am: 8d785df9 am: 10cc9b5f am: 75ad6baa

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15854548

Change-Id: I5c8c5e5b596e32175fdcb1e93fa448d8ea09398a