Move developer options related class to development package

Bug: 34203528
Test: none, purely moving classes around
Change-Id: I3cd1d257f948729fda5c04632e7ce9114c40bd0c

src/com/android/settings/development/OemUnlockUtils.java

@@ -0,0 +1,61 @@
+/*
+ * 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 com.android.settings.development;
+
+import android.content.Context;
+import android.os.UserHandle;
+import android.os.UserManager;
+import android.service.persistentdata.PersistentDataBlockManager;
+import android.util.Log;
+
+public class OemUnlockUtils {
+    private static final String TAG = "OemUnlockUtils";
+
+    /**
+     * Returns whether or not this device is able to be OEM unlocked.
+     */
+    static boolean isOemUnlockEnabled(Context context) {
+        PersistentDataBlockManager manager = (PersistentDataBlockManager)
+                context.getSystemService(Context.PERSISTENT_DATA_BLOCK_SERVICE);
+        return manager.getOemUnlockEnabled();
+    }
+
+    /**
+     * Allows enabling or disabling OEM unlock on this device. OEM unlocked
+     * devices allow users to flash other OSes to them.
+     */
+    static void setOemUnlockEnabled(Context context, boolean enabled) {
+        try {
+            PersistentDataBlockManager manager = (PersistentDataBlockManager)
+                    context.getSystemService(Context.PERSISTENT_DATA_BLOCK_SERVICE);
+            manager.setOemUnlockEnabled(enabled);
+        } catch (SecurityException e) {
+            Log.e(TAG, "Fail to set oem unlock.", e);
+        }
+    }
+
+    /**
+     * Returns {@code true} if OEM unlock is disallowed by user restriction
+     * {@link UserManager#DISALLOW_FACTORY_RESET} or {@link UserManager#DISALLOW_OEM_UNLOCK}.
+     * Otherwise, returns {@code false}.
+     */
+    static boolean isOemUnlockAllowed(UserManager um) {
+        final UserHandle userHandle = UserHandle.of(UserHandle.myUserId());
+        return !(um.hasBaseUserRestriction(UserManager.DISALLOW_OEM_UNLOCK, userHandle)
+                || um.hasBaseUserRestriction(UserManager.DISALLOW_FACTORY_RESET, userHandle));
+    }
+}