Revert "[devicelab] reduce iterations, uninstall at end, and use ...

Revert "[devicelab] reduce iterations, uninstall at end, and use  --application-binary in all startup tests (#68516)" (#68531)

This reverts commit a4c2075a.

dev/devicelab/lib/tasks/perf_tests.dart

@@ -454,56 +454,24 @@ class StartupTest {
 
   Future<TaskResult> run() async {
     return await inDirectory<TaskResult>(testDirectory, () async {
-      final Device device = await devices.workingDevice;
-      const int iterations = 5;
-      final List<Map<String, dynamic>> results = <Map<String, dynamic>>[];
-
-      section('Building application');
-      String applicationBinaryPath;
-      switch (deviceOperatingSystem) {
-        case DeviceOperatingSystem.android:
-          await flutter('build', options: <String>[
-            'apk',
-            '-v',
-            '--profile',
-            '--target-platform=android-arm,android-arm64',
-          ]);
-          applicationBinaryPath = '$testDirectory/build/app/outputs/flutter-apk/app-profile.apk';
-          break;
-        case DeviceOperatingSystem.ios:
-          await flutter('build', options: <String>[
-            'ios',
-             '-v',
-            '--profile',
-          ]);
-          applicationBinaryPath = '$testDirectory/build/ios/iphoneos/Runner.app';
-          break;
-        case DeviceOperatingSystem.fuchsia:
-        case DeviceOperatingSystem.fake:
-          break;
-      }
+      final String deviceId = (await devices.workingDevice).deviceId;
+      await flutter('packages', options: <String>['get']);
 
-      for (int i = 0; i < iterations; i += 1) {
+      const int iterations = 15;
+      final List<Map<String, dynamic>> results = <Map<String, dynamic>>[];
+      for (int i = 0; i < iterations; ++i) {
         await flutter('run', options: <String>[
           '--no-android-gradle-daemon',
           '--verbose',
           '--profile',
           '--trace-startup',
           '-d',
-          device.deviceId,
-          if (applicationBinaryPath != null)
-            '--use-application-binary=$applicationBinaryPath',
+          deviceId,
         ]);
         final Map<String, dynamic> data = json.decode(
           file('$testDirectory/build/start_up_info.json').readAsStringSync(),
         ) as Map<String, dynamic>;
         results.add(data);
-
-        await flutter('install', options: <String>[
-          '--uninstall-only',
-          '-d',
-          device.deviceId,
-        ]);
       }
 
       final Map<String, dynamic> averageResults = _average(results, iterations);