Organize notification classes in row/stack

No functional changes. Reorganized logic under either row, stack,
logging, or row/wrapper. Haven't moved all classes over since there's
some classes that create conflicts due to weird use of
package-private/protected (primarily waiting for HUN and shelf classes).

Test: built, ran, used notifications
Bug: 110802404
Change-Id: Ia2152603bdbeb12c522360193511946c843b9266
diff --git a/packages/SystemUI/src/com/android/systemui/Dependency.java b/packages/SystemUI/src/com/android/systemui/Dependency.java
index 9c9f021..86e0e1f 100644
--- a/packages/SystemUI/src/com/android/systemui/Dependency.java
+++ b/packages/SystemUI/src/com/android/systemui/Dependency.java
@@ -46,7 +46,7 @@
 import com.android.systemui.power.EnhancedEstimatesImpl;
 import com.android.systemui.power.PowerNotificationWarnings;
 import com.android.systemui.power.PowerUI;
-import com.android.systemui.statusbar.AppOpsListener;
+import com.android.systemui.statusbar.notification.AppOpsListener;
 import com.android.systemui.statusbar.VibratorHelper;
 import com.android.systemui.statusbar.phone.ConfigurationControllerImpl;
 import com.android.systemui.statusbar.phone.DarkIconDispatcherImpl;