'Lock Screen Message' option is in enable state for 'None'.

Also take the 'lock screen enabled' state into account besides
the 'owner info enabled' when deciding if the lock screen message
tile should be enabled or not.

Bug: 26350729
Change-Id: Ic64a64b4757252f2bef3c385c725611de14b2798
diff --git a/src/com/android/settings/SecuritySettings.java b/src/com/android/settings/SecuritySettings.java
index fbe0f1c..4ce76ce 100644
--- a/src/com/android/settings/SecuritySettings.java
+++ b/src/com/android/settings/SecuritySettings.java
@@ -214,7 +214,8 @@
 
         mOwnerInfoPref = findPreference(KEY_OWNER_INFO_SETTINGS);
         if (mOwnerInfoPref != null) {
-            mOwnerInfoPref.setEnabled(!mLockPatternUtils.isDeviceOwnerInfoEnabled());
+            mOwnerInfoPref.setEnabled(!mLockPatternUtils.isLockScreenDisabled(MY_USER_ID)
+                    && !mLockPatternUtils.isDeviceOwnerInfoEnabled());
 
             if (mOwnerInfoPref.isEnabled()) {
                 mOwnerInfoPref.setOnPreferenceClickListener(new OnPreferenceClickListener() {