[automerger skipped] Prevent apps from spamming addAccountExplicitly. am: 551d70e1c8 am: 662fcc58ef -s ours am: 9290f7b31f -s ours am: c75430ebfb -s ours am: aa390948a0 -s ours am: c28c8ea4c3 -s ours am: 14a63e16ec -s ours

am skip reason: skipped by user aseemk

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15624525

Change-Id: Ibc19be495564f6f0419dd933f44ef0b605547882