Merge "Redesign the gesture tutorial for the Back gesture" into tm-qpr-dev am: 60c419b9

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/21779343



Change-Id: I00170b244f7e51be704d980b526c19b4980ed954
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>