Merge "[SettingsProvider] verify ringtone URI before setting" into rvc-dev am: 941891258d am: 037f529f7d am: 456da723a4

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/24424817

Change-Id: I81909d0d5e4a63ab34eb359ea7920d7fee16e612
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>