Move WiFi/Bluetooth scanning toggles to new pages

Screenshots: http://shortn/_ZmO6y9Zi5S

Bug: 180533061
Test: on device
Change-Id: I1223c9f5641bcc24b3e16af45138643f62849b8b

src/com/android/settings/location/LocationServicesBluetoothScanningPreferenceController.java

@@ -0,0 +1,49 @@
+/*
+ * Copyright 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.location;
+
+import android.content.Context;
+import android.provider.Settings;
+
+import com.android.settings.R;
+import com.android.settings.core.BasePreferenceController;
+
+/**
+ * Preference controller for Bluetooth scanning in Location Services.
+ */
+public class LocationServicesBluetoothScanningPreferenceController extends
+        BasePreferenceController {
+
+    public LocationServicesBluetoothScanningPreferenceController(Context context, String key) {
+        super(context, key);
+    }
+
+    @Override
+    public CharSequence getSummary() {
+        final boolean bleScanOn = Settings.Global.getInt(mContext.getContentResolver(),
+                Settings.Global.BLE_SCAN_ALWAYS_AVAILABLE, 0) == 1;
+        int resId =
+                bleScanOn ? R.string.scanning_status_text_on : R.string.scanning_status_text_off;
+        return mContext.getString(resId);
+    }
+
+    @AvailabilityStatus
+    public int getAvailabilityStatus() {
+        return mContext.getResources().getBoolean(R.bool.config_show_location_scanning)
+                ? AVAILABLE
+                : UNSUPPORTED_ON_DEVICE;
+    }
+}