Fix for issue 4921: ad the generic type info to a List when we create it.

lib/compiler/implementation/universe/universe.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #library('universe');
 
 #import('../closure.dart');
 #import('../elements/elements.dart');
 #import('../leg.dart');
 #import('../scanner/scannerlib.dart');
@@ skipping 70 matching lines @@
     return hasMatchingSelector(invokedSetters[member.name], member, compiler);
   }
 
   bool hasFieldGetter(Element member, Compiler compiler) {
     return hasMatchingSelector(fieldGetters[member.name], member, compiler);
   }
 
   bool hasFieldSetter(Element member, Compiler compiler) {
     return hasMatchingSelector(fieldSetters[member.name], member, compiler);
   }
+
+  bool hasIsCheck(DartType type) => isChecks.contains(type);
 }
 
 class SelectorKind {
   final String name;
   const SelectorKind(this.name);
 
   static const SelectorKind GETTER = const SelectorKind('getter');
   static const SelectorKind SETTER = const SelectorKind('setter');
   static const SelectorKind CALL = const SelectorKind('call');
   static const SelectorKind OPERATOR = const SelectorKind('operator');
@@ skipping 328 matching lines @@
 
     if (!self.isInterface() && self.isSubclassOf(other)) {
       // Resolve an invocation of [element.name] on [self]. If it
       // is found, this selector is a candidate.
       return hasElementIn(self, element) && appliesUntyped(element, compiler);
     }
 
     return false;
   }
 }