Merge "libbinder: Flush excess refs after single async transaction" am:...

Merge "libbinder: Flush excess refs after single async transaction" am: e378a9e3 am: 69f4e01c am: 8c967d54

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/2402157



Change-Id: I4505c1c18ff728621a4d23ec8c68622a4107adb0
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>