Handle URIs with picker db flag enabled

Allow more UI data loading code paths to use picker db flag if
enabled.

This is a no-op change if the picker db flag is disabled (which it
still is)

Test: atest ItemsProviderTest
Test: PickerViewModelTest
Bug: 195009148

Change-Id: Ie6fde2712c329484d83e602d714dc57c0d0c06a0
10 files changed