tree e153fa64a1fa1f5eec0233740e4a349762f2a099
parent 4559ddeb090d8c600cf35a9dd4ac2e9d20836887
author jackqdyulei <jackqdyulei@google.com> 1510877174 -0800
committer jackqdyulei <jackqdyulei@google.com> 1511201480 -0800

Decouple BluetoothDevicePreference and DeviceListPreferenceFragment

The BluetoothDevicePreference need to know whether to display with an
invalid name. However pass in the whole fragment is over-killing.

This cl decouple it for several reasons:
1. In P, BluetoothDevicePreference will be used in other fragment.
2. In preference lifecycle from end user side, this flag is constant.

Bug: 69333961
Test: RunSettingsRoboTests
Change-Id: I3dbcd2a4aafa3ead74371534250e5e7c3ee221f7