Send ACTION_DEVICE_OWNER_CHANGED broadcast after clearing device owner

Change-Id: Iaac182c69a30e941da3a017a923247d813881521
Fix: 27261692
diff --git a/services/devicepolicy/java/com/android/server/devicepolicy/DevicePolicyManagerService.java b/services/devicepolicy/java/com/android/server/devicepolicy/DevicePolicyManagerService.java
index 9c4b94e..f5fcc64 100644
--- a/services/devicepolicy/java/com/android/server/devicepolicy/DevicePolicyManagerService.java
+++ b/services/devicepolicy/java/com/android/server/devicepolicy/DevicePolicyManagerService.java
@@ -5883,6 +5883,8 @@
             try {
                 clearDeviceOwnerLocked(admin, deviceOwnerUserId);
                 removeActiveAdminLocked(deviceOwnerComponent, deviceOwnerUserId);
+                Intent intent = new Intent(DevicePolicyManager.ACTION_DEVICE_OWNER_CHANGED);
+                mContext.sendBroadcastAsUser(intent, UserHandle.of(deviceOwnerUserId));
             } finally {
                 mInjector.binderRestoreCallingIdentity(ident);
             }
diff --git a/services/tests/servicestests/src/com/android/server/devicepolicy/DevicePolicyManagerTest.java b/services/tests/servicestests/src/com/android/server/devicepolicy/DevicePolicyManagerTest.java
index 0fd1286..01b2c3b 100644
--- a/services/tests/servicestests/src/com/android/server/devicepolicy/DevicePolicyManagerTest.java
+++ b/services/tests/servicestests/src/com/android/server/devicepolicy/DevicePolicyManagerTest.java
@@ -839,6 +839,12 @@
         );
 
         assertFalse(dpm.isAdminActiveAsUser(admin1, UserHandle.USER_SYSTEM));
+
+        // ACTION_DEVICE_OWNER_CHANGED should be sent twice, once for setting the device owner
+        // and once for clearing it.
+        verify(mContext.spiedContext, times(2)).sendBroadcastAsUser(
+                MockUtils.checkIntentAction(DevicePolicyManager.ACTION_DEVICE_OWNER_CHANGED),
+                MockUtils.checkUserHandle(UserHandle.USER_SYSTEM));
         // TODO Check other calls.
     }