Clean up navigation bar

- Move off fragments, now we have direct ownership of
  NavBarController -> NavBar (per display) -> NavBarView
- Move the nav bar components to its own package
- Removed some unused files
- Can finally dump NavigationBarController instead of FragmentService :)
- Clean up some of the dumps to be more consistent

Bug: 163690441
Bug: 158605244
Test: atest SystemUITests
Test: Test bar in various nav modes

Change-Id: I21130899df560f6cf8b7f38d4d86edca6d8f920e
diff --git a/packages/SystemUI/proguard.flags b/packages/SystemUI/proguard.flags
index f242157..92e7d88 100644
--- a/packages/SystemUI/proguard.flags
+++ b/packages/SystemUI/proguard.flags
@@ -1,9 +1,9 @@
--keep class com.android.systemui.statusbar.policy.KeyButtonView {
+-keep class com.android.systemui.navigationbar.buttons.KeyButtonView {
   public float getDrawingAlpha();
   public void setDrawingAlpha(float);
 }
 
--keep class com.android.systemui.statusbar.policy.KeyButtonRipple {
+-keep class com.android.systemui.navigationbar.buttons.KeyButtonRipple {
   public float getGlowAlpha();
   public float getGlowScale();
   public void setGlowAlpha(float);