Use cmdline gc-type and phenotype to decide which GC to run am: 0ec131e448 am: a2cfe9e0ad

Original change: https://android-review.googlesource.com/c/platform/art/+/2308662

Change-Id: Ief2c4ce815c12d421548053be625331feb485fc9
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>