Send broadcast when user restrictions change.

- Send UserManager.ACTION_USER_RESTRICTIONS_CHANGED, which is a runtime receiver
only broadcast.

Bug 36355208

Test: cts-tradefed run cts-dev --skip-device-info --skip-preconditions --skip-system-status-check com.android.compatibility.common.tradefed.targetprep.NetworkConnectivityChecker -a armeabi-v7a -l INFO -m CtsDevicePolicyManagerTestCases -t 'com.android.cts.devicepolicy.UserRestrictionsTest#testUserRestrictions_deviceOwnerOnly'
Test: cts-tradefed run cts-dev --skip-device-info --skip-preconditions --skip-system-status-check com.android.compatibility.common.tradefed.targetprep.NetworkConnectivityChecker -a armeabi-v7a -l INFO -m CtsDevicePolicyManagerTestCases -t 'com.android.cts.devicepolicy.UserRestrictionsTest#testUserRestrictions_primaryProfileOwnerOnly'
Test: cts-tradefed run cts-dev --skip-device-info --skip-preconditions --skip-system-status-check com.android.compatibility.common.tradefed.targetprep.NetworkConnectivityChecker -a armeabi-v7a -l INFO -m CtsDevicePolicyManagerTestCases -t 'com.android.cts.devicepolicy.UserRestrictionsTest#testUserRestrictions_secondaryProfileOwnerOnly'
Change-Id: Ifd82e39ce2c08ed5accdf017f4a1ea3af6face63
diff --git a/api/system-current.txt b/api/system-current.txt
index ddfc1cc..775b80d 100644
--- a/api/system-current.txt
+++ b/api/system-current.txt
@@ -34417,6 +34417,7 @@
     method public deprecated void setUserRestrictions(android.os.Bundle);
     method public deprecated void setUserRestrictions(android.os.Bundle, android.os.UserHandle);
     method public static boolean supportsMultipleUsers();
+    field public static final java.lang.String ACTION_USER_RESTRICTIONS_CHANGED = "android.os.action.USER_RESTRICTIONS_CHANGED";
     field public static final java.lang.String ALLOW_PARENT_PROFILE_APP_LINKING = "allow_parent_profile_app_linking";
     field public static final java.lang.String DISALLOW_ADD_MANAGED_PROFILE = "no_add_managed_profile";
     field public static final java.lang.String DISALLOW_ADD_USER = "no_add_user";
diff --git a/api/test-current.txt b/api/test-current.txt
index fe67696..68b539a 100644
--- a/api/test-current.txt
+++ b/api/test-current.txt
@@ -31719,6 +31719,7 @@
     method public deprecated void setUserRestrictions(android.os.Bundle);
     method public deprecated void setUserRestrictions(android.os.Bundle, android.os.UserHandle);
     method public static boolean supportsMultipleUsers();
+    field public static final java.lang.String ACTION_USER_RESTRICTIONS_CHANGED = "android.os.action.USER_RESTRICTIONS_CHANGED";
     field public static final java.lang.String ALLOW_PARENT_PROFILE_APP_LINKING = "allow_parent_profile_app_linking";
     field public static final java.lang.String DISALLOW_ADD_MANAGED_PROFILE = "no_add_managed_profile";
     field public static final java.lang.String DISALLOW_ADD_USER = "no_add_user";
diff --git a/core/java/android/os/UserManager.java b/core/java/android/os/UserManager.java
index a638cd4..f6712f8 100644
--- a/core/java/android/os/UserManager.java
+++ b/core/java/android/os/UserManager.java
@@ -22,6 +22,7 @@
 import android.annotation.Nullable;
 import android.annotation.RequiresPermission;
 import android.annotation.SystemApi;
+import android.annotation.TestApi;
 import android.annotation.UserIdInt;
 import android.annotation.WorkerThread;
 import android.app.Activity;
@@ -763,6 +764,16 @@
     public static final int PIN_VERIFICATION_SUCCESS = -1;
 
     /**
+     * Sent when user restrictions have changed.
+     *
+     * @hide
+     */
+    @SystemApi
+    @TestApi // To allow seeing it from CTS.
+    public static final String ACTION_USER_RESTRICTIONS_CHANGED =
+            "android.os.action.USER_RESTRICTIONS_CHANGED";
+
+    /**
      * Error result indicating that this user is not allowed to add other users on this device.
      * This is a result code returned from the activity created by the intent
      * {@link #createUserCreationIntent(String, String, String, PersistableBundle)}.
diff --git a/services/core/java/com/android/server/pm/UserManagerService.java b/services/core/java/com/android/server/pm/UserManagerService.java
index b9fcf4e..9893049 100644
--- a/services/core/java/com/android/server/pm/UserManagerService.java
+++ b/services/core/java/com/android/server/pm/UserManagerService.java
@@ -1493,6 +1493,10 @@
                     listeners[i].onUserRestrictionsChanged(userId,
                             newRestrictionsFinal, prevRestrictionsFinal);
                 }
+
+                final Intent broadcast = new Intent(UserManager.ACTION_USER_RESTRICTIONS_CHANGED)
+                        .setFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY);
+                mContext.sendBroadcastAsUser(broadcast, UserHandle.of(userId));
             }
         });
     }