Walk up the super chain to find an IMT to share. am: fa26b96f2f am: e661dadf16 am: 4064189043

Original change: https://android-review.googlesource.com/c/platform/art/+/2407273

Change-Id: I369542026cd87e5654c8c1a3ba40b6d71d4a8d73
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>