[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: ef4197a1 -s ours am: 4b8d2c67 -s ours

am skip reason: skipped by user aseemk

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

Change-Id: Ic5d29d533230173c23cf3e543da35ccb0f410ca2