Add package:http requests to network integration test (#9016)

Author: srawlins

packages/devtools_app/integration_test/test/live_connection/network_screen_test.dart

@@ -57,6 +57,16 @@ void main() {
     _expectInRequestTable('DELETE');
     await helper.clear();
 
+    // Instruct the app to make a GET request via the 'http' package.
+    await helper.triggerRequest('packageHttp/get/');
+    _expectInRequestTable('GET');
+    await helper.clear();
+
+    // Instruct the app to make a POST request via the 'http' package.
+    await helper.triggerRequest('packageHttp/post/');
+    _expectInRequestTable('POST');
+    await helper.clear();
+
     // Instruct the app to make a GET request via Dio.
     await helper.triggerRequest('dio/get/');
     _expectInRequestTable('GET');
@@ -79,6 +89,10 @@ final class _NetworkScreenHelper {
     // Press the 'Clear' button between tests.
     await _tester.tap(find.text('Clear'));
     await _tester.pump(safePumpDuration);
+    expect(
+      screenControllers.lookup<NetworkController>().requests.value,
+      isEmpty,
+    );
   }
 
   Future<void> triggerRequest(String path) async {

packages/devtools_app/test/test_infra/fixtures/networking_app/bin/main.dart

@@ -74,11 +74,10 @@ Future<io.HttpServer> _bindControlServer(io.HttpServer testServer) async {
   return server;
 }
 
-// TODO WebSocket
-// TODO package:http - BrowserClient - https://pub.dev/documentation/http/latest/browser_client/BrowserClient-class.html
-// TODO cupertino_http - https://pub.dev/packages/cupertino_http
-// TODO cronet_http - https://pub.dev/packages/cronet_http
-// TDOO fetch_client? https://pub.dev/packages/fetch_client
+// TODO(https://github.com/flutter/devtools/issues/8223): Test support for
+// WebSockets.
+// TODO(https://github.com/flutter/devtools/issues/4829): Test support for the
+// cupertino_http package and the cronet_http package.
 
 class _HttpClient {
   _HttpClient(int testServerPort)