This adds a confirmation dialog for when you hit the "Forget" button to
unpair with a device from the Bluetooth device details page.
Bug: 37955181
Test: make RunSettingsRoboTests
Change-Id: I7643ed09bf363c48078d6de8a47583bf91fc7729
Bug: 35877479
Test: make RunSettingsRoboTests
The existing behavior is to bring up a dialog with Bluetooth device
details with checkboxes for each supported profile. This adds a new page
that serves the same purpose with a switch for each profile and a footer
containing the MAC address.
Whether to use the new page or old dialog is controlled by a flag
accessible via BluetoothFeatureProvider.
Change-Id: I026c363d4cd33932a84017a67cbef51c258bad10
