Merge "Changing flat request string to a set of element keys." into udc-dev...

Merge "Changing flat request string to a set of element keys." into udc-dev am: 0d5caaf5 am: 311bafa8

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22189064



Change-Id: I5bc9c1d3e0af80fee16ff78455fa5f417d235715
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>