CAS: Add openSessionDefault am: 46720e796c

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2418320

Change-Id: I0627dbe8f94d04a8ecccd2f1e25da9d7fd52943e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>