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: I3211ab9df213d7614f5d400c3326d2a8c9d58cfc
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>