Play "device trusted" sound when onTrustInitiatedByUser fires

Bug: 16840500
Change-Id: I73fbe5c2cff665ccb637abb9039d57f377d9df53
diff --git a/core/java/android/provider/Settings.java b/core/java/android/provider/Settings.java
index cfa7ae7..20e26e6 100644
--- a/core/java/android/provider/Settings.java
+++ b/core/java/android/provider/Settings.java
@@ -5132,6 +5132,13 @@
         public static final String UNLOCK_SOUND = "unlock_sound";
 
         /**
+         * URI for the "device is trusted" sound, which is played when the device enters the trusted
+         * state without unlocking.
+         * @hide
+         */
+        public static final String TRUSTED_SOUND = "trusted_sound";
+
+        /**
          * URI for the low battery sound file.
          * @hide
          */