Add flutter update packages to some tests. (#75530)

* Add flutter update packages to some tests.

Analyzer_benchmark and flutter_test_performance require to pub get
multiple directories. Rather than delegating the recipes to run flutter
update-packages we explicitly running on tests that need it.

Bug: https://github.com/flutter/flutter/issues/75524

* Add pub get directly on the analyis classes.

* Run flutter get in dev/tools.

* Fix directory path.

* Add more dependency directories.

* Fix typo.

* Add more dependencies.

* Add stocks dependency.

* Fix paths to some apps.

* Add more dependencies.

* Complete dependencies definition.

* More analysis dependencies.

* Add examples dependencies.

* Dev tool dependencies.

* Use update-packages for analyzer benchmark.

dev/devicelab/bin/tasks/flutter_test_performance.dart

@@ -101,11 +101,20 @@ Future<int> runTest({bool coverage = false, bool noPub = false}) async {
   return clock.elapsedMilliseconds;
 }
 
+Future<void> pubGetDependencies(List<Directory> directories) async {
+  for (final Directory directory in directories) {
+    await inDirectory<void>(directory, () async {
+      await flutter('pub', options: <String>['get']);
+    });
+  }
+}
+
 void main() {
   task(() async {
     final File nodeSourceFile = File(path.join(
       flutterDirectory.path, 'packages', 'flutter', 'lib', 'src', 'foundation', 'node.dart',
     ));
+    await pubGetDependencies(<Directory>[Directory(path.join(flutterDirectory.path, 'dev', 'automated_tests')),]);
     final String originalSource = await nodeSourceFile.readAsString();
     try {
       await runTest(noPub: true); // first number is meaningless; could have had to build the tool, run pub get, have a cache, etc

dev/devicelab/lib/tasks/analysis.dart

@@ -24,6 +24,7 @@ Future<TaskResult> analyzerBenchmarkTask() async {
   await inDirectory<void>(flutterDirectory, () async {
     rmTree(_megaGalleryDirectory);
     mkdirs(_megaGalleryDirectory);
+    await flutter('update-packages');
     await dart(<String>['dev/tools/mega_gallery.dart', '--out=${_megaGalleryDirectory.path}']);
   });
 
@@ -56,7 +57,7 @@ class _BenchmarkResult {
 }
 
 abstract class _Benchmark {
-  _Benchmark({ this.watch = false });
+  _Benchmark({this.watch = false});
 
   final bool watch;
 
@@ -65,9 +66,9 @@ abstract class _Benchmark {
   Directory get directory;
 
   List<String> get options => <String>[
-    '--benchmark',
-    if (watch) '--watch',
-  ];
+        '--benchmark',
+        if (watch) '--watch',
+      ];
 
   Future<double> execute(int iteration, int targetIterations) async {
     section('Analyze $title ${watch ? 'with watcher' : ''} - ${iteration + 1} / $targetIterations');
@@ -83,7 +84,7 @@ abstract class _Benchmark {
 
 /// Times how long it takes to analyze the Flutter repository.
 class _FlutterRepoBenchmark extends _Benchmark {
-  _FlutterRepoBenchmark({ bool watch = false }) : super(watch: watch);
+  _FlutterRepoBenchmark({bool watch = false}) : super(watch: watch);
 
   @override
   String get title => 'Flutter repo';
@@ -93,14 +94,13 @@ class _FlutterRepoBenchmark extends _Benchmark {
 
   @override
   List<String> get options {
-    return super.options
-      ..add('--flutter-repo');
+    return super.options..add('--flutter-repo');
   }
 }
 
 /// Times how long it takes to analyze the generated "mega_gallery" app.
 class _MegaGalleryBenchmark extends _Benchmark {
-  _MegaGalleryBenchmark({ bool watch = false }) : super(watch: watch);
+  _MegaGalleryBenchmark({bool watch = false}) : super(watch: watch);
 
   @override
   String get title => 'mega gallery';