Add support for setImmediate on IE.

sdk/lib/_internal/compiler/js_lib/async_patch.dart

Index: sdk/lib/_internal/compiler/js_lib/async_patch.dart
diff --git a/sdk/lib/_internal/compiler/js_lib/async_patch.dart b/sdk/lib/_internal/compiler/js_lib/async_patch.dart
index 88ab1d0479a5dbbf8f3f721c8f460868ec73f943..e0813ad617708b28d9658366c8ed923d710ef781 100644
--- a/sdk/lib/_internal/compiler/js_lib/async_patch.dart
+++ b/sdk/lib/_internal/compiler/js_lib/async_patch.dart
@@ -63,10 +63,9 @@ class _AsyncRun {
         JS('', '#.firstChild ? #.removeChild(#): #.appendChild(#)',
             div, div, span, div, span);
       };
-
+    } else if (JS('', 'self.setImmediate') != null) {
+      return _scheduleImmediateWithSetImmediate;
     }
-    // TODO(9002): don't use the Timer to enqueue the immediate callback.
-    // Also check for other JS options like setImmediate.
     // TODO(20055): We should use DOM promises when available.
     return _scheduleImmediateWithTimer;
   }
@@ -81,6 +80,16 @@ class _AsyncRun {
        convertDartClosureToJS(internalCallback, 0));
   }
 
+  static void _scheduleImmediateWithSetImmediate(void callback()) {
+    internalCallback() {
+      leaveJsAsync();
+      callback();
+    };
+    enterJsAsync();
+    JS('void', 'self.setImmediate(#)',
+       convertDartClosureToJS(internalCallback, 0));
+  }
+
   static void _scheduleImmediateWithTimer(void callback()) {
     Timer._createTimer(Duration.ZERO, callback);
   }