[automerger skipped] Merge "Prevent callback registration when back flag is...

[automerger skipped] Merge "Prevent callback registration when back flag is disabled" into tm-dev am: 1c6de844 am: 0592820f am: 9e2a134d am: c21bb6a1 -s ours

am skip reason: Merged-In I54d843f11130a78ed5a68cbe4722e601a2086ee1 with SHA-1 a2e45f1e is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18794217



Change-Id: Ib82e9c52f214399825b4435c8e8769f8a5a8ae1a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>