Merge "Represent hidden classes' subclass definitions in partial signature...

Merge "Represent hidden classes' subclass definitions in partial signature files" into udc-dev-plus-aosp am: 9bfcfeaf am: 45bcc502

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/24385073



Change-Id: I8e357d7789801337df1f3e157a3669fbd3dc025b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>