Update the settings privacy page to the latest mocks

Add the mic and camera toggles to the page. Also create an helper class
to keep binder calls to the system_server at a minimum.

Test: make RunSettingsRoboTests
Test: atest SettingsUnitTests
Test: Manual
Bug: 183985427
Change-Id: Iff6ee1c9a2c30095307f636decbcfcf298ed31b0

src/com/android/settings/privacy/CameraToggleController.java

@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2021 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.privacy;
+
+import static com.android.settings.utils.SensorPrivacyManagerHelper.CAMERA;
+
+import android.content.Context;
+import android.provider.DeviceConfig;
+
+/**
+ * Controller for microphone toggle
+ */
+public class CameraToggleController extends SensorToggleController {
+    public CameraToggleController(Context context, String preferenceKey) {
+        super(context, preferenceKey);
+    }
+
+    @Override
+    public int getSensor() {
+        return CAMERA;
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        return mSensorPrivacyManagerHelper.supportsSensorToggle(getSensor())
+                && DeviceConfig.getBoolean(DeviceConfig.NAMESPACE_PRIVACY, "camera_toggle_enabled",
+                true) ? AVAILABLE_UNSEARCHABLE : UNSUPPORTED_ON_DEVICE;
+    }
+}