Pin gallery version (#62986)

dev/devicelab/bin/tasks/flutter_gallery_v2_chrome_run_test.dart

@@ -10,6 +10,7 @@ import 'package:path/path.dart' as path;
 
 import 'package:flutter_devicelab/framework/framework.dart';
 import 'package:flutter_devicelab/framework/utils.dart';
+import 'package:flutter_devicelab/versions/gallery.dart' show galleryVersion;
 
 Future<void> main() async {
   await task(const NewGalleryChromeRunTest().run);
@@ -36,9 +37,14 @@ class NewGalleryChromeRunTest {
 
   /// Runs the test.
   Future<TaskResult> run() async {
-    await gitClone(path: 'temp', repo: galleryRepo);
+    final Directory galleryParentDir =
+        Directory.systemTemp.createTempSync('temp');
+    final Directory galleryDir =
+        Directory(path.join(galleryParentDir.path, 'gallery'));
 
-    final TaskResult result = await inDirectory<TaskResult>('temp/gallery', () async {
+    await getNewGallery(galleryVersion, galleryDir);
+
+    final TaskResult result = await inDirectory<TaskResult>(galleryDir, () async {
       await flutter('doctor');
       await flutter('packages', options: <String>['get']);
 
@@ -102,7 +108,7 @@ class NewGalleryChromeRunTest {
       }
     });
 
-    rmTree(Directory('temp'));
+    rmTree(galleryParentDir);
 
     return result;
   }

dev/devicelab/bin/tasks/flutter_gallery_v2_web_compile_test.dart

@@ -4,8 +4,11 @@
 
 import 'dart:io';
 
+import 'package:path/path.dart' as path;
+
 import 'package:flutter_devicelab/framework/framework.dart';
 import 'package:flutter_devicelab/framework/utils.dart';
+import 'package:flutter_devicelab/versions/gallery.dart' show galleryVersion;
 
 import 'package:flutter_devicelab/tasks/perf_tests.dart' show WebCompileTest;
 
@@ -22,22 +25,27 @@ class NewGalleryWebCompileTest {
 
   /// Runs the test.
   Future<TaskResult> run() async {
-    await gitClone(path: 'temp', repo: 'https://github.com/flutter/gallery.git');
+    final Directory galleryParentDir =
+        Directory.systemTemp.createTempSync('temp');
+    final Directory galleryDir =
+        Directory(path.join(galleryParentDir.path, 'gallery'));
+
+    await getNewGallery(galleryVersion, galleryDir);
 
     final Map<String, Object> metrics = await inDirectory<Map<String, int>>(
-      'temp/gallery',
+      galleryDir,
       () async {
         await flutter('doctor');
 
         return await WebCompileTest.runSingleBuildTest(
-          directory: 'temp/gallery',
+          directory: galleryDir.path,
           metric: metricKeyPrefix,
           measureBuildTime: true,
         );
       },
     );
 
-    rmTree(Directory('temp'));
+    rmTree(galleryParentDir);
 
     return TaskResult.success(metrics, benchmarkScoreKeys: metrics.keys.toList());
   }

dev/devicelab/lib/tasks/new_gallery.dart

@@ -10,6 +10,7 @@ import 'package:flutter_devicelab/tasks/perf_tests.dart';
 
 import '../framework/framework.dart';
 import '../framework/utils.dart';
+import '../versions/gallery.dart' show galleryVersion;
 
 class NewGalleryPerfTest extends PerfTest {
   NewGalleryPerfTest(
@@ -28,7 +29,7 @@ class NewGalleryPerfTest extends PerfTest {
     // Manually roll the new gallery version for now. If the new gallery repo
     // turns out to be updated frequently in the future, we can set up an auto
     // roller to update this version.
-    await getNewGallery('a208eac6e6e8336ae9820e54c572c099231f1da2', galleryDir);
+    await getNewGallery(galleryVersion, galleryDir);
     return await super.run();
   }
 

dev/devicelab/lib/versions/gallery.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.
+
+/// The pinned version of flutter gallery, used for devicelab tests.
+const String galleryVersion = 'a208eac6e6e8336ae9820e54c572c099231f1da2';