Use the new OemLockService to get OEM lock state.

Previously, the PersistentDataBlockService but that is only one possible
implementation of the OEM lock. The new service abstracts the
implementation so is the API that should be used.

Test: Manual
Bug: 34766843
Change-Id: I5f9cb94996f84c4c082d152f05cd8aef566edc66

tests/robotests/src/android/service/oemlock/OemLockManager.java

@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.service.oemlock;
+
+/**
+ * Make OemLockManager available to Robolectric.
+ */
+public class OemLockManager {
+    public void setOemUnlockAllowedByCarrier(boolean allowed, byte[] signature) {}
+
+    public boolean isOemUnlockAllowedByCarrier() {
+        return true;
+    }
+
+    public void setOemUnlockAllowedByUser(boolean allowed) {}
+
+    public boolean isOemUnlockAllowedByUser() {
+        return false;
+    }
+
+    public boolean canUserAllowOemUnlock() {
+        return true;
+    }
+    public boolean isOemUnlockAllowed() {
+        return false;
+    }
+
+    public boolean isDeviceOemUnlocked() {
+        return false;
+    }
+}