Merge "Announce scaled value for font scaling seekbar in Talkback" into udc-dev am: 80d1f08c am: 0de65ebe

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/21647983



Change-Id: I22a959e7834b4849536b9e849235bce78b99e6db
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>