[automerger skipped] Prevent apps from spamming addAccountExplicitly. am: 551d70e1c8 am: 662fcc58ef -s ours

am skip reason: skipped by user aseemk

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

Change-Id: I276d0881ce0ffdbf72ad16381cd3b32b26042f8b