[automerger skipped] Introducing private tab in profile tabs and sidebar. am: d5f27a5f -s ours

am skip reason: Merged-In I130cda26346f7df81fabbb9c9f1ba92b1b859929 with SHA-1 99f3acaa is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/DocumentsUI/+/26091764



Change-Id: I3b1f5bd4e8f8dd03a27078bab6c138c75d51082b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>