Add method for Settings

Test: manual
Bug: 156033178
Change-Id: I3c334c6697e9bc13451faa0c0df1cdbdc3eaf6ea

Author: Julia Reynolds

core/java/android/app/INotificationManager.aidl

@@ -58,6 +58,7 @@ interface INotificationManager
 
     void setShowBadge(String pkg, int uid, boolean showBadge);
     boolean canShowBadge(String pkg, int uid);
+    boolean hasSentValidMsg(String pkg, int uid);
     boolean isInInvalidMsgState(String pkg, int uid);
     boolean hasUserDemotedInvalidMsgApp(String pkg, int uid);
     void setInvalidMsgAppDemoted(String pkg, int uid, boolean isDemoted);

services/core/java/com/android/server/notification/NotificationManagerService.java

@@ -3171,6 +3171,12 @@ public void setShowBadge(String pkg, int uid, boolean showBadge) {
             handleSavePolicyFile();
         }
 
+        @Override
+        public boolean hasSentValidMsg(String pkg, int uid) {
+            checkCallerIsSystem();
+            return mPreferencesHelper.hasSentValidMsg(pkg, uid);
+        }
+
         @Override
         public boolean isInInvalidMsgState(String pkg, int uid) {
             checkCallerIsSystem();