Merge "Notifies magnification change for the transitioning target mode" into...

Merge "Notifies magnification change for the transitioning target mode" into tm-dev am: b26d2ae8 am: 6724a507 am: b48bfed4

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17040106



Change-Id: I48a68a8b10b26f1739d00f13d3545ff870a074a4
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>