5333ecd1fb
Create the obsolete version of the belowing fragments, so we could flip between old page and new page. BluetoothSettingsObsolete and DeviceListPreferenceObsoleteFragment contains all the old logic but: 1. Logic about BluetoothPairingPreferenceController(ag/2239482), since this preference shouldn't be checked in without the flag :( This cl also adds logic in MasterSwitchPreferenceController to flip these two pages. Following cl will refactor these fragment to make it compatible to new framework. Bug: 35877041 Test: RunSettingsRoboTests Change-Id: I1cc1bc2d49d8a3e11c3127e56f6409fbc84028d8