[Provider Model] Replace WiFi panel to Internet panel

- Replace the android.settings.panel.action.WIFI panel
  - Provider Model Disable: Wifi panel
  - Provider Model Enabled: Internet panel

Bug: 172707942
Test: manual test
- adb shell am start -a android.settings.panel.action.WIFI
- atest PanelFeatureProviderImplTest

Change-Id: I9f111e96385452b586971d4c28988b564d4e25f4

tests/unit/src/com/android/settings/testutils/FeatureFlagUtilsRule.java

@@ -0,0 +1,68 @@
+/*
+ * 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.testutils;
+
+import android.content.Context;
+import android.util.FeatureFlagUtils;
+
+import androidx.test.core.app.ApplicationProvider;
+
+import org.junit.rules.ExternalResource;
+
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * A test rule that is used to automatically recover the FeatureFlagUtils resource after testing.
+ *
+ * Example:
+ * <pre class="code"><code class="java">
+ * public class ExampleTest {
+ *
+ *     &#064;Rule
+ *     public final FeatureFlagUtilsRule mFeatureFlagUtilsRule = new FeatureFlagUtilsRule();
+ *
+ * }
+ * </code></pre>
+ */
+public class FeatureFlagUtilsRule extends ExternalResource {
+
+    private Context mContext;
+    private Map<String, Boolean> mBackupFeatureFlags = new HashMap<String, Boolean>();
+
+    @Override
+    protected void before() throws Throwable {
+        mContext = ApplicationProvider.getApplicationContext();
+    }
+
+    @Override
+    protected void after() {
+        mBackupFeatureFlags.forEach((k, v) -> FeatureFlagUtils.setEnabled(mContext, k, v));
+    }
+
+    public void setEnabled(String feature, boolean enabled) {
+        if (enabled == FeatureFlagUtils.isEnabled(mContext, feature)) {
+            return;
+        }
+        mBackupFeatureFlags.putIfAbsent(feature, !enabled);
+        FeatureFlagUtils.setEnabled(mContext, feature, enabled);
+    }
+
+    public void setProviderModelEnabled(boolean enabled) {
+        setEnabled(FeatureFlagUtils.SETTINGS_PROVIDER_MODEL, enabled);
+    }
+}