add ios tests (#63797)

dev/devicelab/bin/tasks/flutter_gallery__transition_perf_e2e_ios.dart

+// Copyright 2014 The Flutter Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+import 'dart:async';
+
+import 'package:flutter_devicelab/tasks/gallery.dart';
+import 'package:flutter_devicelab/framework/adb.dart';
+import 'package:flutter_devicelab/framework/framework.dart';
+
+Future<void> main() async {
+  deviceOperatingSystem = DeviceOperatingSystem.ios;
+  await task(createGalleryTransitionE2ETest());
+}

dev/devicelab/bin/tasks/flutter_gallery__transition_perf_e2e_ios32.dart

+// Copyright 2014 The Flutter Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+import 'dart:async';
+
+import 'package:flutter_devicelab/tasks/gallery.dart';
+import 'package:flutter_devicelab/framework/adb.dart';
+import 'package:flutter_devicelab/framework/framework.dart';
+
+Future<void> main() async {
+  deviceOperatingSystem = DeviceOperatingSystem.ios;
+  await task(createGalleryTransitionE2ETest());
+}

dev/devicelab/manifest.yaml

@@ -769,6 +769,22 @@ tasks:
     required_agent_capabilities: ["linux/android"]
     flaky: true
 
+  flutter_gallery__transition_perf_e2e_ios32:
+    description: >
+      Measures the performance of screen transitions in Flutter Gallery on
+      Android with e2e.
+    stage: devicelab
+    required_agent_capabilities: ["mac/ios32"]
+    flaky: true
+
+  flutter_gallery__transition_perf_e2e_ios:
+    description: >
+      Measures the performance of screen transitions in Flutter Gallery on
+      Android with e2e.
+    stage: devicelab
+    required_agent_capabilities: ["mac/ios"]
+    flaky: true
+
   flutter_gallery__transition_perf_hybrid:
     description: >
       Measures the performance of screen transitions in Flutter Gallery on