Add NetworkRequestDialogActivity

Framwork will call this activity to start network requesting process.
This activity is simple activity contained NetworkRequestDialogFragment
and any other dialog generated in this process, aka
NetworkRequestTimeoutDialog.

Bug: 117399926
Test: RunSettingsRoboTests
Change-Id: Ib1df28d12427ed3bd7d4b88ec10e52357564c797

tests/robotests/src/com/android/settings/wifi/NetworkRequestDialogActivityTest.java

@@ -0,0 +1,48 @@
+/*
+ * 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
+ */
+
+package com.android.settings.wifi;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import androidx.appcompat.app.AlertDialog;
+
+import com.android.settings.testutils.SettingsRobolectricTestRunner;
+import com.android.settings.testutils.shadow.SettingsShadowResourcesImpl;
+import com.android.settings.testutils.shadow.ShadowAlertDialogCompat;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.robolectric.Robolectric;
+import org.robolectric.annotation.Config;
+
+@RunWith(SettingsRobolectricTestRunner.class)
+@Config(shadows = {
+        ShadowAlertDialogCompat.class,
+        SettingsShadowResourcesImpl.class
+})
+public class NetworkRequestDialogActivityTest {
+
+    @Test
+    public void LaunchActivity_shouldShowNetworkRequestDialog() {
+        NetworkRequestDialogActivity activity = Robolectric
+                .setupActivity(NetworkRequestDialogActivity.class);
+
+        AlertDialog alertDialog = ShadowAlertDialogCompat.getLatestAlertDialog();
+
+        assertThat(alertDialog.isShowing()).isTrue();
+    }
+}