Merge "Merge "Clarifies how the autofill service should check for signature...

Merge "Merge "Clarifies how the autofill service should check for signature hashes." into oc-dev am: c8f0fd70 am: 6f9f1747" into oc-dr1-dev-plus-aosp
am: e3e338ed

Change-Id: Id8f0b1623ed9b268d3cd45521a5e9965b8e3feeb