Merge "[Testing] Remove Robolectric import and use AndroidJUnit4 instead in MobileDataEnabledListenerTest" am: f5fa52884b am: 49936c5eb5 am: ccc406381a

Original change: https://android-review.googlesource.com/c/platform/packages/apps/Settings/+/1427810

Change-Id: I65499d47dfa6b2905f65bcf6729f4f5e2ab02af9