1. Show up to 3 devices in main page
2. Add "See all" preference to go ot detail page
Bug: 116350449
Test: Screenshot && RunSettingsRoboTests
Change-Id: Iee0de8a2b7f2543e946a117ba2d9ca9dde6c8678
Having consistent import order will reduce chance of merge
conflict between internal and external master
Test: rebuild
Change-Id: I0b1a170967ddcce7f388603fd521f6ed1eeba30b
Count the dock devices in previously connected device controller.
Change-Id: I08d82ec715698ecf894a4a7cd0631c5f1de0f591
Fix: 80227045
Test: m -j SettingsRoboTests RunSettingsRoboTests
* For fix the TreeHugger error in pi-dev, cherry pick the ag/3935357 in
master and fix TreeHugger error.
* Add PreviouslyConnectedDevicePreferenceController to handle the preference should be
enable or disable.
Example: If there are no previously connected devices disable the preference otherwise
enable it.
* Add PreviouslyConnectedDevicePreferenceControllerTest
1. Verify the callback can be registered and unregistered
2. Verify the preference is enable when there
have more than 1 previously connected device
3. Verify the preference is disable when there
have no previously connected device
Bug: 78250052
Test: make -j50 RunSettingsRoboTests
Change-Id: I31b5d416aaf907c3bbf1cb61de6e7401463e3df7
