Show dialog when trying to change location provider permission.

GMS Core is the location provider on the device and so the permission
cannot be disabled.  Instead of having clicks on it go to a disabled
tri-state screen, restore the P behavior of popping up a dialog that
can redirect users to the Location setting.

Fixes: 123902223
Test: Click on GMS Core location on four different screens and get
this dialog.
Test: Click on other permissions and get the normal tri-state.

Change-Id: Ic4ec22dea46405d4800010dec437822965f351ec