Create DependencyBinder which is abstract and can tell dagger how
to convert directly between interfaces and implementations without
requiring code for it.
Test: compile (which runs dagger)
Change-Id: I7013ee12d37172441e2c70cf2fe36f707975c821
Convert NavigationBarFragment as a proof of concept and remove all
references to Dependency from NavigationBarFragment.
Test: atest SystemUITests
Change-Id: I0cdb5bc6ac455fce91e67b9e449cb7b78b1da9a4
Early days as we start migration, so lots of duplication between
Dependency and dagger2, but can be removed when migration is done.
Test: existing tests.
Change-Id: I00c3da6ebbd46a26e512d8a7aa1e2b828e08f33f
