Add user restriction to suppress error dialogs.

Bug: 66125576
Test: cts-tradefed run cts-dev --module DevicePolicyManager -t com.android.cts.devicepolicy.UserRestrictionsTest
Test: bit FrameworksServicesTests:com.android.server.pm.UserRestrictionsUtilsTest
Change-Id: I1c4cf4a107f47e9b5543607e57b76dd2e5acfba5
diff --git a/services/core/java/com/android/server/pm/UserRestrictionsUtils.java b/services/core/java/com/android/server/pm/UserRestrictionsUtils.java
index a6b05d7..c18a71d 100644
--- a/services/core/java/com/android/server/pm/UserRestrictionsUtils.java
+++ b/services/core/java/com/android/server/pm/UserRestrictionsUtils.java
@@ -96,6 +96,7 @@
             UserManager.DISALLOW_SMS,
             UserManager.DISALLOW_FUN,
             UserManager.DISALLOW_CREATE_WINDOWS,
+            UserManager.DISALLOW_SYSTEM_ERROR_DIALOGS,
             UserManager.DISALLOW_CROSS_PROFILE_COPY_PASTE,
             UserManager.DISALLOW_OUTGOING_BEAM,
             UserManager.DISALLOW_WALLPAPER,
@@ -156,6 +157,7 @@
     private static final Set<String> GLOBAL_RESTRICTIONS = Sets.newArraySet(
             UserManager.DISALLOW_ADJUST_VOLUME,
             UserManager.DISALLOW_BLUETOOTH_SHARING,
+            UserManager.DISALLOW_SYSTEM_ERROR_DIALOGS,
             UserManager.DISALLOW_RUN_IN_BACKGROUND,
             UserManager.DISALLOW_UNMUTE_MICROPHONE,
             UserManager.DISALLOW_UNMUTE_DEVICE