Merge "Update OoB TalkBack tutorial with appropriate description of holding...

Merge "Update OoB TalkBack tutorial with appropriate description of holding down volume buttons" into udc-dev am: 9e1a8aff

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/21611427



Change-Id: I7da3b39ef1bb3f65740e764ae7d3fb2b5deb097f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>