[automerger skipped] [DO NOT MERGE] Check caller's uid in backupAgentCreated callback am: ebdcc72a23 am: d5b33232da -s ours

am skip reason: subject contains skip directive

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/24323875

Change-Id: Iaef313c47addcb072aeba88210d738be3d653b17
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>