[Status Bar Refactor] 1/3: Have HeadsUpAppearanceController be created by

dagger and use it in CollapsedStatusBarFragment instead of using
StatusBar.java.

Note that HUAC can't be injected to the fragment directly because that
creates a dependency cycle: PhoneStatusBarView is injected into HUAC,
which is injected into the fragment, which provides PhoneStatusBarView.

Test: manual (verified HUAC callbacks still trigger, verified fragment
is still getting the correct value for shouldHeadsUpBeVisible)
Test: atest SystemUITests
Test: new unit tests
Bug: 205609837
Bug: 204792508

Change-Id: I33aa80f4866c9561302430cf9206cc96802896cc