For devices which don't support dreaming on battery, we can offer simpler options since the device must always be charging for screensavers to appear. Therefore there are only two options: 1. While charging 2. While docked and charging Test: flashed and verified on device Test: make -j64 RunSettingsRoboTests Fixes: 226187572 Change-Id: I6ed24cda8874f2fb941f6cfded9ed97ed78a3cb6