Added UM.DISALLOW_OEM_UNLOCK, Removed Global.OEM_UNLOCK_DISALLOWED.

Currently we used global setting to restrict user from enabling oem
unlock. As global settings can be chagned using adb, using user
restrictions instead.

Bug: 29893399
Change-Id: Ic83112a4838b8279bf50408a29ae205e0b8639ee
diff --git a/services/core/java/com/android/server/pm/UserManagerService.java b/services/core/java/com/android/server/pm/UserManagerService.java
index d750cbf..c062485 100644
--- a/services/core/java/com/android/server/pm/UserManagerService.java
+++ b/services/core/java/com/android/server/pm/UserManagerService.java
@@ -1799,6 +1799,18 @@
         mUserVersion = USER_VERSION;
 
         Bundle restrictions = new Bundle();
+        try {
+            final String[] defaultFirstUserRestrictions = mContext.getResources().getStringArray(
+                    com.android.internal.R.array.config_defaultFirstUserRestrictions);
+            for (String userRestriction : defaultFirstUserRestrictions) {
+                if (UserRestrictionsUtils.isValidRestriction(userRestriction)) {
+                    restrictions.putBoolean(userRestriction, true);
+                }
+            }
+        } catch (Resources.NotFoundException e) {
+            Log.e(LOG_TAG, "Couldn't find resource: config_defaultFirstUserRestrictions", e);
+        }
+
         synchronized (mRestrictionsLock) {
             mBaseUserRestrictions.append(UserHandle.USER_SYSTEM, restrictions);
         }