Documented what's returned by DPM.getUserRestrictions().

Test: none
Fixes: 173729240

Change-Id: I435704e76d45af919e301f59f0bd18ffb539e4d8
diff --git a/core/java/android/app/admin/DevicePolicyManager.java b/core/java/android/app/admin/DevicePolicyManager.java
index 224e3a8..99f73d8 100644
--- a/core/java/android/app/admin/DevicePolicyManager.java
+++ b/core/java/android/app/admin/DevicePolicyManager.java
@@ -8408,6 +8408,8 @@
      * it previously set with {@link #addUserRestriction(ComponentName, String)}.
      *
      * @param admin Which {@link DeviceAdminReceiver} this request is associated with.
+     * @return a {@link Bundle} whose keys are the user restrictions, and the values a
+     * {@code boolean} indicating whether the restriction is set.
      * @throws SecurityException if {@code admin} is not a device or profile owner.
      */
     public @NonNull Bundle getUserRestrictions(@NonNull ComponentName admin) {