Merge "Add the logging of presentation and session_commit events." into udc-dev am: 88f247d3 am: eaf32428

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22611948



Change-Id: I61e0ff325ad4b1603e2345ba701732a32f7ac877
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>