[automerger skipped] Add MOBILE_DATA_PREFERRED_APPS setting am: 6a29f472 am: eece0e54 am: 29a67e7a -s ours am: 15ba17a3 -s ours

am skip reason: skip tag Change-Id Ic5e0515b2b948de3d333c8d8e073d0b15514562a with SHA-1 45515ca1 is already in history

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1654015

Change-Id: I81f6e41b9d5d5fc66c78b1129327b5eb6da5ea5b