Improve odrefresh metrics collection. am: 1be593c9fc

Original change: https://android-review.googlesource.com/c/platform/art/+/2223024

Change-Id: I1bd5ec6b312ed1f069298f1d33f0ea8f6f759c6d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>