Adding DPM.reboot

Adding new policy in DPM to trigger reboot on the device.
Requirement: Device owner can reboot the device if it is stuck or is
not useable due to some unresponsive UI.

Bug: 25304994
Change-Id: I7a6d5c8ad611de9c1cf6619378e492a306b41626
diff --git a/core/java/android/app/admin/DevicePolicyManager.java b/core/java/android/app/admin/DevicePolicyManager.java
index 08b7d62..b3c7cc5 100644
--- a/core/java/android/app/admin/DevicePolicyManager.java
+++ b/core/java/android/app/admin/DevicePolicyManager.java
@@ -40,8 +40,8 @@
 import android.os.ServiceManager;
 import android.os.UserHandle;
 import android.os.UserManager;
-import android.provider.Settings;
 import android.provider.ContactsContract.Directory;
+import android.provider.Settings;
 import android.security.Credentials;
 import android.service.restrictions.RestrictionsReceiver;
 import android.util.Log;
@@ -56,14 +56,14 @@
 import java.net.InetSocketAddress;
 import java.net.Proxy;
 import java.security.KeyFactory;
+import java.security.NoSuchAlgorithmException;
 import java.security.PrivateKey;
 import java.security.cert.Certificate;
 import java.security.cert.CertificateException;
 import java.security.cert.CertificateFactory;
 import java.security.cert.X509Certificate;
-import java.security.spec.PKCS8EncodedKeySpec;
 import java.security.spec.InvalidKeySpecException;
-import java.security.NoSuchAlgorithmException;
+import java.security.spec.PKCS8EncodedKeySpec;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
@@ -4679,4 +4679,15 @@
             return null;
         }
     }
+
+    /**
+     * Called by device owner to reboot the device.
+     */
+    public void reboot(@NonNull ComponentName admin) {
+        try {
+            mService.reboot(admin);
+        } catch (RemoteException re) {
+            Log.w(TAG, REMOTE_EXCEPTION_MESSAGE, re);
+        }
+    }
 }