Properly update git binary snapshots during pub upgrade.

sdk/lib/_internal/pub/test/global/activate/reactivating_git_upgrades_test.dart

Index: sdk/lib/_internal/pub/test/global/activate/reactivating_git_upgrades_test.dart
diff --git a/sdk/lib/_internal/pub/test/global/activate/reactivating_git_upgrades_test.dart b/sdk/lib/_internal/pub/test/global/activate/reactivating_git_upgrades_test.dart
index f328d269fad3905b0d34bfafc69443a0ecf12976..19f895f997ff743f05f45df9ab83aa105fe5c9fd 100644
--- a/sdk/lib/_internal/pub/test/global/activate/reactivating_git_upgrades_test.dart
+++ b/sdk/lib/_internal/pub/test/global/activate/reactivating_git_upgrades_test.dart
@@ -2,6 +2,8 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
+import 'package:scheduled_test/scheduled_test.dart';
+
 import '../../descriptor.dart' as d;
 import '../../test_pub.dart';
 
@@ -16,12 +18,15 @@ main() {
     ]).create();
 
     schedulePub(args: ["global", "activate", "-sgit", "../foo.git"],
-        output: '''
-            Resolving dependencies...
-            + foo 1.0.0 from git ../foo.git
-            Precompiling executables...
-            Loading source assets...
-            Activated foo 1.0.0 from Git repository "../foo.git".''');
+        output: allOf(
+            startsWith(
+                'Resolving dependencies...\n'
+                '+ foo 1.0.0 from git ../foo.git at '),
+            // Specific revision number goes here.
+            endsWith(
+                'Precompiling executables...\n'
+                'Loading source assets...\n'
+                'Activated foo 1.0.0 from Git repository "../foo.git".')));
 
     d.git('foo.git', [
       d.libPubspec("foo", "1.0.1")
@@ -29,12 +34,16 @@ main() {
 
     // Activating it again pulls down the latest commit.
     schedulePub(args: ["global", "activate", "-sgit", "../foo.git"],
-        output: '''
-            Package foo is currently active from Git repository "../foo.git".
-            Resolving dependencies...
-            + foo 1.0.1 from git ../foo.git
-            Precompiling executables...
-            Loading source assets...
-            Activated foo 1.0.1 from Git repository "../foo.git".''');
+        output: allOf(
+            startsWith(
+                'Package foo is currently active from Git repository '
+                  '"../foo.git".\n'
+                'Resolving dependencies...\n'
+                '+ foo 1.0.1 from git ../foo.git at '),
+            // Specific revision number goes here.
+            endsWith(
+                'Precompiling executables...\n'
+                'Loading source assets...\n'
+                'Activated foo 1.0.1 from Git repository "../foo.git".')));
   });
 }