Fix test/runner/signal_test.

test/runner/signal_test.dart

Index: test/runner/signal_test.dart
diff --git a/test/runner/signal_test.dart b/test/runner/signal_test.dart
index ffb2de5be7a673ba6097cad31301e89089b02c82..2a2681c4bef629e5bcf11e197cf4b58f48c05b58 100644
--- a/test/runner/signal_test.dart
+++ b/test/runner/signal_test.dart
@@ -148,7 +148,7 @@ void main() {
 """);
 
       return _startTest(["-p", "content-shell", "test.dart"]).then((process) {
-        return _lines.bind(process.stdout).skip(3).first.then((line) {
+        return _lines.bind(process.stdout).skip(2).first.then((line) {

[kevmoo, 2015/04/23 00:07:53]

understanding why it's 2 and not three would be nice – for the next dev that
maintains this

[nweiz, 2015/04/23 00:12:06]

Done.

           expect(line, equals("running test"));
           process.kill();
           return process.exitCode;