Merge "Add note about Sensor.TYPE_HEAD_TRACKER visibility" into tm-dev am: 616530de am: 0287aecd am: 22257eb0 am: 539976c4

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18381200



Change-Id: I920fdbdcb7d3a6ccc4756bb016dd783d982ad049
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>