Fix checked mode failures after List became an abstract class.

sdk/lib/_internal/compiler/implementation/resolution/members.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.
 
 part of resolution;
 
 abstract class TreeElements {
   Element operator[](Node node);
   Selector getSelector(Send send);
   DartType getType(Node node);
@@ skipping 1103 matching lines @@
       } else if (element.isClass()) {
         ClassElement cls = element;
         cls.ensureResolved(compiler);
         Link<DartType> arguments =
             resolveTypeArguments(node, cls.typeVariables, scope,
                                  onFailure, whenResolved);
         if (cls.typeVariables.isEmpty && arguments.isEmpty) {
           // Use the canonical type if it has no type parameters.
           type = cls.computeType(compiler);
         } else {
-          type = new InterfaceType(cls, arguments);
+          type = new InterfaceType(cls.declaration, arguments);
         }
       } else if (element.isTypedef()) {
         TypedefElement typdef = element;
         // TODO(ahe): Should be [ensureResolved].
         compiler.resolveTypedef(typdef);
         typdef.computeType(compiler);
         Link<DartType> arguments = resolveTypeArguments(
             node, typdef.typeVariables,
             scope, onFailure, whenResolved);
         if (typdef.typeVariables.isEmpty && arguments.isEmpty) {
@@ skipping 1984 matching lines @@
     return e;
   }
 
   /// Assumed to be called by [resolveRedirectingFactory].
   Element visitReturn(Return node) {
     Node expression = node.expression;
     return finishConstructorReference(visit(expression),
                                       expression, expression);
   }
 }