Implement scheduleImmediate for the VM.

sdk/lib/_internal/compiler/implementation/enqueue.dart

Index: sdk/lib/_internal/compiler/implementation/enqueue.dart
diff --git a/sdk/lib/_internal/compiler/implementation/enqueue.dart b/sdk/lib/_internal/compiler/implementation/enqueue.dart
index 986ebec06d94620ba6c28520e89836f9ea4b9e4a..80aab2260104d04e96333d6a94c1eb300d11187c 100644
--- a/sdk/lib/_internal/compiler/implementation/enqueue.dart
+++ b/sdk/lib/_internal/compiler/implementation/enqueue.dart
@@ -636,10 +636,15 @@ class ResolutionEnqueuer extends Enqueuer {
       } else if (uri == 'dart:async') {
         if (element.name == '_createTimer' ||

[floitsch, 2013/11/21 17:39:47]

_createTimer, _createPeriodicTimer and scheduleImmediate (below) all use the
TimerImpl from the isolate_helper library, but I wasn't able to simplify the
code to just look for that.

             element.name == '_createPeriodicTimer') {
-          // The [:Timer:] class uses the event queue of the isolate
+          // The `Timer` class uses the event queue of the isolate
           // library, so we make sure that event queue is generated.
           enableIsolateSupport(library);
         }
+      } else if (uri == 'dart:_collection-dev' &&
+                 element.name == "scheduleImmediate") {
+        // `scheduleImmediate` class uses the event queue of the isolate
+        // library, so we make sure that event queue is generated.
+        enableIsolateSupport(library);
       }
     }