Having consistent import order will reduce chance of merge
conflict between internal and external master
Test: rebuild
Change-Id: I0b1a170967ddcce7f388603fd521f6ed1eeba30b
The summary is invisible by default if we use preference_app.xml,
this CL turn it on if summary is not empty.
Bug: 111366678
Test: RunSettingsRoboTests
Change-Id: I3fe5827a5e80a8e21309b163dbbaa1070f5ee61e
use preference_app to make sure the app icon is 24dp.
Bug: 71502850
Test: Screenshot | RunSettingsRoboTests
Change-Id: I0d7704246299201e72b991f199f9ddd2f224a8a3