Do not rely on the exit code of browser to determine if the *command* was successful

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 3d575922dec5b0c85539f0a0c9984de4685bf07e..fc3948332fb4667798ecc5b4941d08c220e26f3d 100644
--- a/tools/testing/dart/test_runner.dart
+++ b/tools/testing/dart/test_runner.dart
@@ -726,7 +726,13 @@ class BrowserCommandOutputImpl extends CommandOutputImpl {
     }
   }
 
-  bool didFail(TestCase testCase) {
+  bool get canRunDependendCommands {
+    // We cannot rely on the exit code of content_shell as a method to determine
+    // if we were successful or not.
+    return super.canRunDependendCommands && !didFail(null);

[kustermann, 2013/08/05 10:23:44]

If this returns 'false' and command.numRetries > 0, we'll retry it.

+  }
+
+  bool didFail(TestCase _) {
     if (_failedBecauseOfMissingXDisplay) {
       return true;
     }