Modified the PrivacySettings and add PreferenceControllers

- Changed the PrivacySettings to DashboardFragment.
- Added the new five related PreferenceControllers and related codes
- Modified the privacy_settings.xml
- Removed the PrivacySettingsTest test by design changed
- Moved the PrivacySettings.java from root directory to backup

Test: manual
Test: make RunSettingsRoboTests
Change-Id: Ic88e2e58a11d024d2394f75c3db5b46fe2d86dba

src/com/android/settings/backup/BackupInactivePreferenceController.java

@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2018 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.backup;
+
+import android.content.Context;
+
+import com.android.settings.core.BasePreferenceController;
+
+public class BackupInactivePreferenceController extends BasePreferenceController {
+
+    public BackupInactivePreferenceController(Context context, String key) {
+        super(context, key);
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        if (!PrivacySettingsUtils.isAdminUser(mContext)) {
+            return DISABLED_FOR_USER;
+        }
+        if (PrivacySettingsUtils.isInvisibleKey(mContext, PrivacySettingsUtils.BACKUP_INACTIVE)) {
+            return DISABLED_UNSUPPORTED;
+        }
+        return AVAILABLE;
+    }
+}