Merge nyc-car-dev

         8b368ce0 Update keyline values for PagedListView
         ee49ca9d Add car trust agent.
         cce88f1e Update overlay bring it up to the latest values.
         05f88fcf Include reference apps in generic car product.
         178fd5af Set color of scroll bar thumb to 50% alpha.
         0a81b748 Merge changes from topic 'emulator-update' into nyc-car-dev
         5afda66d Placeholder application for maps.
         95d5f7db Replace Maps with a placeholder in the emulator.
         c666e6c2 Move scrollbar above recyclerview in PagedListView

bug: 32029701
Test: manual
Change-Id: I3aec3bf5c4ef69bceb6a60379f37080ee44fc7f3