Merge "[automerger skipped] Merge "Ensure isTopBucket() gets set when there is just one notification" into qt-dev am: 68f3bb1305 -s ours am: f5933683a7 -s ours am: b309f99019 -s ours am skip reason: change_id I615b2f7fddca30dae67dbaab0e5d54a824a4c441 with SHA1 2d35980e72 is in history" into qt-qpr1-dev-plus-aosp