Add filtering to notification channel settings

Allow apps that are launching this page to specify targeted subsets of
settings that should be shown.

Test: settings notification robotests
Bug: 177246841
Change-Id: Ib491c43f1861a9775e3b25f39134cdbe105a7ff8

src/com/android/settings/notification/app/AddToHomeScreenPreferenceController.java

@@ -16,6 +16,7 @@
 
 package com.android.settings.notification.app;
 
+import android.app.NotificationChannel;
 import android.content.Context;
 import android.util.Slog;
 
@@ -47,6 +48,11 @@ public class AddToHomeScreenPreferenceController extends NotificationPreferenceC
         return mConversationInfo != null;
     }
 
+    @Override
+    boolean isIncludedInFilter() {
+        return mPreferenceFilter.contains(NotificationChannel.EDIT_LAUNCHER);
+    }
+
     @Override
     public boolean handlePreferenceTreeClick(Preference preference) {
         if (KEY.equals(preference.getKey())) {