Split apart several asynchronous tests to reduce timeouts.

pkg/scheduled_test/test/scheduled_process_test.dart

Index: pkg/scheduled_test/test/scheduled_process_test.dart
diff --git a/pkg/scheduled_test/test/scheduled_process_test.dart b/pkg/scheduled_test/test/scheduled_process_test.dart
index 74f0c095bb83f1d81d8d6ca8a42fca14803e01ed..f24758cae7d5a661c69957148e307a2b5d390c7f 100644
--- a/pkg/scheduled_test/test/scheduled_process_test.dart
+++ b/pkg/scheduled_test/test/scheduled_process_test.dart
@@ -16,13 +16,7 @@ import 'metatest.dart';
 import 'utils.dart';
 
 void main() {
-  metaSetUp(() {
-    // TODO(nweiz): We used to only increase the timeout to 10s for the Windows
-    // bots, but the Linux and Mac bots have started taking upwards of 5s when
-    // running pumpEventQueue, so we're increasing the timeout across the board
-    // (see issue 9248).
-    currentSchedule.timeout = new Duration(seconds: 10);
-  });
+  setUpTimeout();
 
   expectTestsPass("a process must have kill() or shouldExit() called", () {
     var errors;