Merge "add LatencyTracker tracing cancel / timeout events" into udc-dev am: 2fe897d5

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/21945287



Change-Id: Ib24c20897262e13af5a072162304bbdd44efe6bc
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>