* Modified DeviceListPreferenceFragment to have enable/disable scanning
methods. In ENABLE state, each onScanningStateChanged(false) will
restart another round of scanning
* Subclasses of DeviceListPreferenceFragment should call enable/disable
scanning when scanning is needed for long period of time
* Currently, BluetoothPairingDetail and DevicePickerFragment call
enableScanning() when Bluetooth is turned ON and call disableScanning
when some device is picked in their lists
* Both BluetoothPairingDetail and DevicePickerFragment will re-enable
scanning if pairing failed for selected device
* Added associated unit tests as well
Bug: 32172815
Test: make, pair Bluetooth device, send file over Bluetooth Opp
Change-Id: I99325e06aadd7b00e7a7ba6d6c282a6831859d8b
This cl splits the BluetoothSettings into paired device page and
pairing page, including small changes about:
1. Refactor the pages so they could get as much as static preference
from xml file rather than dynamically add/remove them everytime.
2. Remove creating method in BluetoothDeviceNamePreferenceController
and add it in xml file
3. Create BluetoothPairingDetail page, basically move the logic from
BluetoothSettings.
4. Make pairing preference clickable and jump to BluetoothPairingDetail
5. Add and update bunch of tests
Bug: 35877041
Test: RunSettingsRoboTests
Change-Id: Ief9e9690c612f7b46c58e866e5cecc511af642c8
