Merge "Atom ProcessStartTime latency should be diff on uptimes." into tm-dev am: 7d172495

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17729342



Change-Id: I9a8f1e2f793bc26971b53cdaecead247b9808ce3
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>