[null-safety] enable null safety (#69440)

* [null-safety] enable null safety * opt expression evaluation web test out of null safety

[null-safety] enable null safety (#69440)
* [null-safety] enable null safety * opt expression evaluation web test out of null safety
324b78eb · Jonah Williams · GitHub · de5bf09e · 324b78eb · 324b78eb
Unverified Commit 324b78eb authored Oct 30, 2020 by Jonah Williams Committed by GitHub Oct 30, 2020
4 changed files
--- a/bin/internal/engine.version
+++ b/bin/internal/engine.version
-8d3d953192aaa1e1491107331858e88ea5a9748b
+3460519398140c75e01383173b42fa95c797cf76
--- a/bin/internal/fuchsia-linux.version
+++ b/bin/internal/fuchsia-linux.version
-Usec4YBzRUKB5WqA-AUEy9neOp7ApMTac1RtJXoUrUgC
+sNx8qabBnGMe9qJNq0hpA09ef4Okdg-zhOODOhPStI8C
--- a/bin/internal/fuchsia-mac.version
+++ b/bin/internal/fuchsia-mac.version
-ICK_JlnKJ9AXOYZ7xsUDljPY1yWUQCBaCln1FWyZ47cC
+mhak7e_o6rs-cR0PedK6Z0RI4VXTVhetXdnaLYlAc_YC
--- a/packages/flutter_tools/test/integration.shard/test_data/tests_project.dart
+++ b/packages/flutter_tools/test/integration.shard/test_data/tests_project.dart
@@ -29,6 +29,7 @@ class TestsProject extends Project {
  String get main => '// Unused';

  final String testContent = r'''
+  // @dart = 2.8
  import 'package:flutter_test/flutter_test.dart';

  void main() {