Register super field set explicitly in the universe.

pkg/compiler/lib/src/universe/universe.dart

Index: pkg/compiler/lib/src/universe/universe.dart
diff --git a/pkg/compiler/lib/src/universe/universe.dart b/pkg/compiler/lib/src/universe/universe.dart
index 5a7ba20eb85a4571f16ea5c35cd598fca1c62f78..8b2f53ec4297e12d8dc704272e7f26977bd0d97f 100644
--- a/pkg/compiler/lib/src/universe/universe.dart
+++ b/pkg/compiler/lib/src/universe/universe.dart
@@ -305,7 +305,9 @@ class Universe {
     Map<Selector, SelectorConstraints> selectors = selectorMap.putIfAbsent(
         name, () => new Maplet<Selector, SelectorConstraints>());
     UniverseSelectorConstraints constraints = selectors.putIfAbsent(
-        selector, () => selectorConstraintsStrategy.createSelectorConstraints(selector));
+        selector, () {
+      return selectorConstraintsStrategy.createSelectorConstraints(selector);
+    });
     return constraints.addReceiverConstraint(mask);
   }
 
@@ -364,6 +366,7 @@ class Universe {
       case StaticUseKind.FIELD_GET:
         fieldGetters.add(element);
         break;
+      case StaticUseKind.SUPER_FIELD_SET:
       case StaticUseKind.FIELD_SET:
         fieldSetters.add(element);
         break;