Stop retrying failing tests on Safari

tools/testing/dart/test_runner.dart

Index: tools/testing/dart/test_runner.dart
diff --git a/tools/testing/dart/test_runner.dart b/tools/testing/dart/test_runner.dart
index a4abf476111dde3e5259c439fcd60c53350784b6..0fe9f188aca33f1c2957021eb9f0426c6eef8c5d 100644
--- a/tools/testing/dart/test_runner.dart
+++ b/tools/testing/dart/test_runner.dart
@@ -2634,16 +2634,6 @@ class ReplayingCommandExecutor implements CommandExecutor {
 }
 
 bool shouldRetryCommand(CommandOutput output) {
-  var command = output.command;
-  // We rerun tests on Safari because 6.2 and 7.1 are flaky. Issue 21434.
-  if (command is BrowserTestCommand &&
-      command.retry &&
-      command.browser == 'safari' &&
-      output is BrowserControllerTestOutcome &&
-      output._rawOutcome != Expectation.PASS) {
-    return true;
-  }
-
   if (!output.successful) {
     List<String> stdout, stderr;
 
@@ -2668,6 +2658,7 @@ bool shouldRetryCommand(CommandOutput output) {
     }
 
     // We currently rerun dartium tests, see issue 14074.
+    final command = output.command;
     if (command is BrowserTestCommand &&
         command.retry &&
         command.browser == 'dartium') {