Add a feature flag for new version of Network and internet settings page

In addition to adding the flag, this also adds a new xml layout that is
the same as the existing network and internet page, but will begin to be
changed in subsequent CLs. There is also a change in code to use this
new layout when the flag is turned on.

One other change is to make the list of displayed feature flags in
developer options be in sorted order instead of whatever semirandom
order they come out of the map's key set.

Bug: 116349402
Test: Manual (settings_network_and_internet_v2 flag should should up in
Settings -> System -> Developer options -> Feature flags, and those
flags should be in sorted order)

Change-Id: I5520d286efb6bec50ba4ca99f64aeca94f01d533

res/xml/network_and_internet_v2.xml

@@ -0,0 +1,100 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- 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.
+-->
+
+<PreferenceScreen
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:settings="http://schemas.android.com/apk/res-auto"
+    android:key="network_and_internet_screen"
+    android:title="@string/network_dashboard_title"
+    settings:initialExpandedChildrenCount="5">
+
+    <com.android.settings.widget.MasterSwitchPreference
+        android:fragment="com.android.settings.wifi.WifiSettings"
+        android:key="toggle_wifi"
+        android:title="@string/wifi_settings"
+        android:summary="@string/summary_placeholder"
+        android:icon="@drawable/ic_settings_wireless"
+        android:order="-30">
+        <intent
+            android:action="android.settings.WIFI_SETTINGS"
+            android:targetClass="Settings$WifiSettingsActivity" />
+    </com.android.settings.widget.MasterSwitchPreference>
+
+    <com.android.settingslib.RestrictedPreference
+        android:key="mobile_network_settings"
+        android:title="@string/network_settings_title"
+        android:summary="@string/summary_placeholder"
+        android:icon="@drawable/ic_network_cell"
+        android:order="-15"
+        settings:keywords="@string/keywords_more_mobile_networks"
+        settings:userRestriction="no_config_mobile_networks"
+        settings:useAdminDisabledSummary="true">
+    </com.android.settingslib.RestrictedPreference>
+
+    <com.android.settingslib.RestrictedPreference
+        android:fragment="com.android.settings.TetherSettings"
+        android:key="tether_settings"
+        android:title="@string/tether_settings_title_all"
+        android:icon="@drawable/ic_wifi_tethering"
+        android:order="-5"
+        android:summary="@string/summary_placeholder"
+        settings:keywords="@string/keywords_hotspot_tethering"
+        settings:userRestriction="no_config_tethering"
+        settings:useAdminDisabledSummary="true" />
+
+    <com.android.settingslib.RestrictedPreference
+        android:key="manage_mobile_plan"
+        android:title="@string/manage_mobile_plan_title"
+        android:persistent="false"
+        android:order="0"
+        settings:userRestriction="no_config_mobile_networks"
+        settings:useAdminDisabledSummary="true" />
+
+    <com.android.settingslib.RestrictedSwitchPreference
+        android:key="toggle_airplane"
+        android:title="@string/airplane_mode"
+        android:icon="@drawable/ic_airplanemode_active"
+        android:disableDependentsState="true"
+        android:order="5"
+        settings:controller="com.android.settings.network.AirplaneModePreferenceController"
+        settings:platform_slice="true"
+        settings:userRestriction="no_airplane_mode"/>
+
+    <Preference
+        android:fragment="com.android.settings.ProxySelector"
+        android:key="proxy_settings"
+        android:title="@string/proxy_settings_title" />
+
+    <com.android.settingslib.RestrictedPreference
+        android:fragment="com.android.settings.vpn2.VpnSettings"
+        android:key="vpn_settings"
+        android:title="@string/vpn_settings_title"
+        android:icon="@drawable/ic_vpn_key"
+        android:order="10"
+        android:summary="@string/summary_placeholder"
+        settings:userRestriction="no_config_vpn"
+        settings:useAdminDisabledSummary="true" />
+
+    <com.android.settings.network.PrivateDnsModeDialogPreference
+        android:key="private_dns_settings"
+        android:title="@string/select_private_dns_configuration_title"
+        android:order="15"
+        android:dialogTitle="@string/select_private_dns_configuration_dialog_title"
+        android:dialogLayout="@layout/private_dns_mode_dialog"
+        android:positiveButtonText="@string/save"
+        android:negativeButtonText="@android:string/cancel" />
+
+</PreferenceScreen>

src/com/android/settings/core/FeatureFlags.java

@@ -27,4 +27,5 @@ public class FeatureFlags {
     public static final String MOBILE_NETWORK_V2 = "settings_mobile_network_v2";
     public static final String DATA_USAGE_V2 = "settings_data_usage_v2";
     public static final String WIFI_MAC_RANDOMIZATION = "settings_wifi_mac_randomization";
+    public static final String NETWORK_INTERNET_V2 = "settings_network_and_internet_v2";
 }

src/com/android/settings/development/featureflags/FeatureFlagsPreferenceController.java

@@ -59,8 +59,7 @@ public class FeatureFlagsPreferenceController extends BasePreferenceController
         }
         mGroup.removeAll();
         final Context prefContext = mGroup.getContext();
-        for (String feature : featureMap.keySet()) {
+        featureMap.keySet().stream().sorted().forEach(feature ->
-            mGroup.addPreference(new FeatureFlagPreference(prefContext, feature));
+            mGroup.addPreference(new FeatureFlagPreference(prefContext, feature)));
-        }
     }
 }

src/com/android/settings/network/NetworkDashboardFragment.java

@@ -21,6 +21,7 @@ import static com.android.settings.network.MobilePlanPreferenceController
 import android.app.Dialog;
 import android.content.Context;
 import android.provider.SearchIndexableResource;
+import android.util.FeatureFlagUtils;
 import android.util.Log;
 
 import androidx.appcompat.app.AlertDialog;
@@ -28,6 +29,7 @@ import androidx.fragment.app.Fragment;
 
 import com.android.internal.logging.nano.MetricsProto;
 import com.android.settings.R;
+import com.android.settings.core.FeatureFlags;
 import com.android.settings.dashboard.DashboardFragment;
 import com.android.settings.network.MobilePlanPreferenceController.MobilePlanPreferenceHost;
 import com.android.settings.search.BaseSearchIndexProvider;
@@ -59,7 +61,11 @@ public class NetworkDashboardFragment extends DashboardFragment implements
 
     @Override
     protected int getPreferenceScreenResId() {
-        return R.xml.network_and_internet;
+        if (FeatureFlagUtils.isEnabled(getContext(), FeatureFlags.NETWORK_INTERNET_V2)) {
+            return R.xml.network_and_internet_v2;
+        } else {
+            return R.xml.network_and_internet;
+        }
     }
 
     @Override