Reland "Walk up the super chain to find an IMT to share." am: 347e4cf059 am: fd83d27905

Original change: https://android-review.googlesource.com/c/platform/art/+/2419201

Change-Id: Ib1a8f5ed74691af1d87fdeee3a68de445e96c281
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>