Merge "Add and update some hotword detection metrics" into tm-dev am: 5e1904c3

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17701596



Change-Id: I620330023e40a8a961a4558de3ce2d59be6abeca
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>