Merge "Developer tile for toggling desktop mode" into tm-qpr-dev am: 3f000fa7

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Settings/+/18975659



Change-Id: I11cc8ff6ad5b704ecb6c20f5b5975c7cb2cb14a7
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>