[automerger skipped] Merge "[DO NOT MERGE ANYWHERE] Add swipes left method in Background.java" into rvc-dev am: 57874e6b39 -s ours am: a449c9323e -s ours

am skip reason: subject contains skip directive

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/12793279

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I316539c39e01a3dda16ab2eba90a05e3529d1e83