Also updated UsbBackend to use the new UsbFunctions
api.
Added new unit tests for UsbDetailsHeaderController
and UsbDetailsProfilesController.
Bug: 69333961
Test: make RunSettingsRoboTests
Change-Id: I133750190bb61dfe0e20b06f50e50ea13b347f1e
Add feature flag to toggle connected device between new and old
feature.
ConnectedDeviceDashboardFragment will contain new feature will
ConnectedDeviceDashboardFragment2 will hold old feature.
Bug: 69333961
Test: Build
Change-Id: I0ea932c69dea5242129aab994d5142b1f87fbea0