Previously everything lived in an inner class method of
SettingsRobolectricTestRunner. That method has now been turned into
a static method so that it can be called by other runners.
Bug: 62460102
Test: robotests
Change-Id: I6612b1f26404587301c534c8ba60e39d59d6c840
Bug: 32642706
Bug: 32637613
Bug: 32643833
Test: RunSettingsRoboTests
This change is necessary to test preference controlling logic, as well
as making preferences reusable in other Preference pages in the new
information architecture.
Change-Id: I9e2fd2f6800579f005a5c303ed03ae06477006a6
