The source of problem is that the controller returns the wrong
availability status value and the searchable attribut of the preference
is false.
Fix: 200249682
Test: manual test and see the search result
Change-Id: I2265514c49303f6a0910f1be84b281fccb9abb45
Add the mic and camera toggles to the page. Also create an helper class
to keep binder calls to the system_server at a minimum.
Test: make RunSettingsRoboTests
Test: atest SettingsUnitTests
Test: Manual
Bug: 183985427
Change-Id: Iff6ee1c9a2c30095307f636decbcfcf298ed31b0