Add adaptive charging to the top level settings menu

Bug: 172009945
Test: Trigger adaptive charging and verify string in menu
Change-Id: I8f600287c38e3992bb884faeb4df3d91570851a0

src/com/android/settings/fuelgauge/BatteryPreferenceController.java

@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2020 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.fuelgauge;
+
+/**
+ * Common interface for a preference controller that updates battery status
+ */
+public interface BatteryPreferenceController {
+
+    /**
+     * Updates the label for the preference controller. If the label is null, the
+     * implementation should revert back to the original label based on the
+     * battery info.
+     */
+    void updateBatteryStatus(String label, BatteryInfo info);
+}