Fix breadcrumb for the search results of Custom restrictions page

Settings Search need Settings to provide the custom site map pairs to
build up the full breadcrumb for the search results of Custom
restrictions page.

Impact search results:
Don't turn on screen
Don't wake for notifications
Hide notification dots on app icons
Hide status bar icons at top of screen
Don't pop notifications on screen
Hide from pull-down shade
Custom restrictions

Bug: 147851992
Bug: 151206664
Test: visual and robotests
Change-Id: I01e359eabcdc362e2a1fde5f3bc4ae5dc6918030