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
Create a dialog that could let users choose their preferred accessibility
shortcut.
This CL only contains dialog layout and its utility methods.
Related logic implementation will be added in next CL.
Bug: 142531156
Test: Maunal
Change-Id: I7bfccea96cc47dd213b4d828499c10b290e24330