Merge "Only allow the system server to connect to sync adapters" into qt-dev...

Merge "Only allow the system server to connect to sync adapters" into qt-dev am: 99ccb4e5 am: 822fbf61 am: ea69ad58 am: f15b3c25 am: 6a68d207 am: ff8964d7 am: cdcc7859 am: bf51ebd5 am: e8407c69 am: caee7e31 am: 15201d2e

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18701369



Change-Id: I8dbba54b7ea844340a4e0d8cb941d856c6727c90
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>