[automerger skipped] Report GC collector type with ART event/value metrics am: 034fbd432c -s ours

am skip reason: skipped by user roosa

Original change: https://googleplex-android-review.googlesource.com/c/platform/art/+/20803107

Change-Id: I95fb7339e8d88fb4ac67685767493c2395964a6f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>