[automerger skipped] Prevent apps from spamming addAccountExplicitly. am:...

[automerger skipped] Prevent apps from spamming addAccountExplicitly. am: 551d70e1 am: 662fcc58 -s ours am: 9290f7b3 -s ours am: c75430eb -s ours am: aa390948 -s ours am: 938893bb -s ours am: 51346aca -s ours

am skip reason: skipped by user aseemk

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

Change-Id: Ia2f2c42940462474bfc7ce000a4d5d2a2c524f01