Add zone support to streams.

tests/lib/async/catch_errors15_test.dart

Index: tests/lib/async/catch_errors15_test.dart
diff --git a/tests/lib/async/catch_errors8_test.dart b/tests/lib/async/catch_errors15_test.dart
similarity index 66%
copy from tests/lib/async/catch_errors8_test.dart
copy to tests/lib/async/catch_errors15_test.dart
index 74abfb703114f26ddff8e1589cb383672b0e30ef..3809683f7748964e86dbc27a6d1b1e1342965fcd 100644
--- a/tests/lib/async/catch_errors8_test.dart
+++ b/tests/lib/async/catch_errors15_test.dart
@@ -11,10 +11,8 @@ main() {
   // hang if the callbacks are not invoked and the test will time out.
   var port = new ReceivePort();
   var events = [];
-  // Test nested `catchErrors`.
-  // The nested `catchErrors` throws all kinds of different errors (synchronous
-  // and asynchronous). The body of the outer `catchErrors` furthermore has a
-  // synchronous `throw`.
+  // Test that the outer `catchErrors` waits for the nested `catchErrors` stream
+  // to be done.
   catchErrors(() {
     events.add("catch error entry");
     catchErrors(() {
@@ -26,28 +24,25 @@ main() {
         throw "delayed error";
       });
       throw "catch error";
-    }).listen((x) { events.add(x); })
-      .asFuture()
-      .then((_) => events.add("inner done"))
-      .then((_) { throw "inner done throw"; });
+    }).listen((x) { events.add("i $x"); },
+              onDone: () => events.add("inner done"));
     events.add("after inner");
     throw "inner throw";
   }).listen((x) {
-      events.add(x);
+      events.add("o $x");
     },
     onDone: () {
       Expect.listEquals(["catch error entry",
                          "catch error entry2",
                          "after inner",
                          "main exit",
-                         "catch error",
-                         "inner throw",
-                         "future error",
-                         "future error2",
-                         499,
-                         "delayed error",
+                         "i catch error",
+                         "o inner throw",
+                         "i future error",
+                         "i future error2",
+                         "i 499",
+                         "i delayed error",
                          "inner done",
-                         "inner done throw"
                          ],
                          events);
       port.close();