Merge "Set the settings key when the font size is changed" into udc-dev am: 0290fb1c

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Settings/+/21858523



Change-Id: I6b600b28f428b130752e0986c490308d33bcee6f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>