To move the preference to the upper layer, we extract all logics
to its controller.
We move all tests to the test files and add server tests to
verify the behaviour of edit shortcut dialog.
Bug: 182992338
Test: atest MagnificationModePreferenceControllerTest
Change-Id: I34c4361e2e116a22c3e34bd35c8ac8cac752ab96
* To increase single responsibility of MagnificationSettingsFragment
Bug: 168567356
Test: atest MagnificationCapabilitiesTest
Change-Id: Ic5e8a556858ac2b6ab9929b1bbdc373ce320c270
Provide a setting for new Magnify area feature and joystick controller
Bug: 146019459
Bug: 146473544
Test: make RunSettingsRoboTests ROBOTEST_FILTER=MagnificationModePreferenceControllerTest
Test: make RunSettingsRoboTests ROBOTEST_FILTER=MagnificationWindowControlPreferenceControllerTest
Test: make RunSettingsRoboTests2
Change-Id: Ia32fa073c59ad304e9ef9eb530ba37dd24c2f2f6