[Provider Model] Add Internet preference to replace Wi-Fi preference

- Change title from "Wi-Fi" to "Internet"
- Remove Wi-Fi switch
- Screenshot:
  https://screenshot.googleplex.com/9tmXYQXKSsuGwEY
  https://screenshot.googleplex.com/5uMCeruXsX3gP9j

Bug: 172295984
Test: manual test
  atest -c InternetPreferenceControllerTest
  make RunSettingsRoboTests ROBOTEST_FILTER=NetworkDashboardFragmentTest
Change-Id: Ie4a3c9aff45fbe7b28594afc9c603e6df57300bf

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

@@ -0,0 +1,82 @@
+/*
+ * 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.network;
+
+import android.content.Context;
+
+import androidx.preference.Preference;
+import androidx.preference.PreferenceScreen;
+
+import com.android.settings.core.PreferenceControllerMixin;
+import com.android.settings.widget.SummaryUpdater;
+import com.android.settings.wifi.WifiSummaryUpdater;
+import com.android.settingslib.core.AbstractPreferenceController;
+import com.android.settingslib.core.instrumentation.MetricsFeatureProvider;
+import com.android.settingslib.core.lifecycle.LifecycleObserver;
+import com.android.settingslib.core.lifecycle.events.OnPause;
+import com.android.settingslib.core.lifecycle.events.OnResume;
+
+/**
+ * PreferenceController to update the internet state.
+ */
+public class InternetPreferenceController extends AbstractPreferenceController implements
+        PreferenceControllerMixin, SummaryUpdater.OnSummaryChangeListener,
+        LifecycleObserver, OnResume, OnPause {
+
+    public static final String KEY_INTERNET_SETTINGS = "internet_settings";
+
+    private Preference mPreference;
+    private final WifiSummaryUpdater mSummaryHelper;
+
+    public InternetPreferenceController(Context context) {
+        super(context);
+        mSummaryHelper = new WifiSummaryUpdater(mContext, this);
+    }
+
+    @Override
+    public void displayPreference(PreferenceScreen screen) {
+        super.displayPreference(screen);
+        mPreference = screen.findPreference(KEY_INTERNET_SETTINGS);
+    }
+
+    @Override
+    public boolean isAvailable() {
+        return true;
+    }
+
+    @Override
+    public String getPreferenceKey() {
+        return KEY_INTERNET_SETTINGS;
+    }
+
+    @Override
+    public void onResume() {
+        mSummaryHelper.register(true);
+    }
+
+    @Override
+    public void onPause() {
+        mSummaryHelper.register(false);
+    }
+
+    @Override
+    public void onSummaryChanged(String summary) {
+        if (mPreference != null) {
+            mPreference.setSummary(summary);
+        }
+    }
+}

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

@@ -104,7 +104,13 @@ public class NetworkDashboardFragment extends DashboardFragment implements
         final MobilePlanPreferenceController mobilePlanPreferenceController =
                 new MobilePlanPreferenceController(context, mobilePlanHost);
         final WifiPrimarySwitchPreferenceController wifiPreferenceController =
-                new WifiPrimarySwitchPreferenceController(context, metricsFeatureProvider);
+                isProviderModelEnabled(context)
+                        ? null
+                        : new WifiPrimarySwitchPreferenceController(
+                                context,
+                                metricsFeatureProvider);
+        final InternetPreferenceController internetPreferenceController =
+                isProviderModelEnabled(context) ? new InternetPreferenceController(context) : null;
 
         final VpnPreferenceController vpnPreferenceController =
                 new VpnPreferenceController(context);
@@ -113,7 +119,12 @@ public class NetworkDashboardFragment extends DashboardFragment implements
 
         if (lifecycle != null) {
             lifecycle.addObserver(mobilePlanPreferenceController);
-            lifecycle.addObserver(wifiPreferenceController);
+            if (wifiPreferenceController != null) {
+                lifecycle.addObserver(wifiPreferenceController);
+            }
+            if (internetPreferenceController != null) {
+                lifecycle.addObserver(internetPreferenceController);
+            }
             lifecycle.addObserver(vpnPreferenceController);
             lifecycle.addObserver(privateDnsPreferenceController);
         }
@@ -125,7 +136,12 @@ public class NetworkDashboardFragment extends DashboardFragment implements
         controllers.add(vpnPreferenceController);
         controllers.add(new ProxyPreferenceController(context));
         controllers.add(mobilePlanPreferenceController);
-        controllers.add(wifiPreferenceController);
+        if (wifiPreferenceController != null) {
+            controllers.add(wifiPreferenceController);
+        }
+        if (internetPreferenceController != null) {
+            controllers.add(internetPreferenceController);
+        }
         controllers.add(privateDnsPreferenceController);
         return controllers;
     }