Rename runAsync to scheduleMicrotask.

tests/lib/async/intercept_run_async2_test.dart

Index: tests/lib/async/intercept_run_async2_test.dart
diff --git a/tests/lib/async/intercept_run_async2_test.dart b/tests/lib/async/intercept_run_async2_test.dart
index c75e458087bb5c464123bf423419116e8488ec99..b1e534c65100ebaca29f7cf536f902e74144ddf3 100644
--- a/tests/lib/async/intercept_run_async2_test.dart
+++ b/tests/lib/async/intercept_run_async2_test.dart
@@ -9,7 +9,7 @@ var events = [];
 
 body() {
   events.add("body entry");
-  runAsync(() {
+  scheduleMicrotask(() {
     events.add("run async body");
   });
   return 499;
@@ -22,8 +22,8 @@ handler(fun) {
 }
 
 main() {
-  // Test that runAsync interception works.
-  var result = runZonedExperimental(body, onRunAsync: handler);
+  // Test that scheduleMicrotask interception works.
+  var result = runZonedExperimental(body, onScheduleMicrotask: handler);
   // No need for a ReceivePort: If the runZonedExperimental disbehaved we
   // would have an [events] list that is different from what we expect.
   Expect.listEquals(["body entry", "handler", "run async body", "handler done"],