Prompt credentials for installing/deleting sounds

Actually we probably want to confirm credentials in all locked cases
not just when starting the user -- fewer corners to special case.

Fix: 34734809
Test: manual. set a work profile lock, screen off/on, open sound settings, try to set a work ringtone. first attempt should prompt for credentials, second attempt should not until next screen-off.
Change-Id: I1fea94f3b0d1b768b22741b887d9891f5e318549
diff --git a/src/com/android/settings/Utils.java b/src/com/android/settings/Utils.java
index 803b8e5..b1c3ab3 100644
--- a/src/com/android/settings/Utils.java
+++ b/src/com/android/settings/Utils.java
@@ -1161,6 +1161,18 @@
         if (!(new LockPatternUtils(context)).isSecure(userId)) {
             return false;
         }
+        return confirmWorkProfileCredentials(context, userId);
+    }
+
+    public static boolean confirmWorkProfileCredentialsIfNecessary(Context context, int userId) {
+        KeyguardManager km = (KeyguardManager) context.getSystemService(Context.KEYGUARD_SERVICE);
+        if (!km.isDeviceLocked(userId)) {
+            return false;
+        }
+        return confirmWorkProfileCredentials(context, userId);
+    }
+
+    private static boolean confirmWorkProfileCredentials(Context context, int userId) {
         final KeyguardManager km = (KeyguardManager) context.getSystemService(
                 Context.KEYGUARD_SERVICE);
         final Intent unlockIntent = km.createConfirmDeviceCredentialIntent(null, null, userId);
@@ -1170,7 +1182,6 @@
         } else {
             return false;
         }
-
     }
 
     public static CharSequence getApplicationLabel(Context context, String packageName) {