dart2js cps: Support function types in 'is' and 'as' operators.

pkg/compiler/lib/src/compiler.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 dart2js;
 
 /**
  * If true, print a warning for each method that was resolved, but not
  * compiled.
  */
@@ skipping 117 matching lines @@
   void registerCompileTimeConstant(ConstantValue constant) {
     backend.registerCompileTimeConstant(constant, this);
     backend.constants.addCompileTimeConstantForEmission(constant);
   }
 
   void registerTypeVariableBoundsSubtypeCheck(DartType subtype,
                                               DartType supertype) {
     backend.registerTypeVariableBoundsSubtypeCheck(subtype, supertype);
   }
 
-  void registerClosureWithFreeTypeVariables(FunctionElement element) {
-    backend.registerClosureWithFreeTypeVariables(element, world, this);
+  void registerInstantiatedClosure(LocalFunctionElement element) {
+    backend.registerInstantiatedClosure(element, this);
   }
 
   void registerGetOfStaticFunction(FunctionElement element) {
     world.registerGetOfStaticFunction(element);
   }
 
   void registerSelectorUse(Selector selector) {
     world.registerSelectorUse(selector);
   }
 
@@ skipping 2358 matching lines @@
   InterfaceType streamType([DartType elementType]) {
     InterfaceType type = streamClass.computeType(compiler);
     if (elementType == null) {
       return streamClass.rawType;
     }
     return type.createInstantiation([elementType]);
   }
 }
 
 typedef void InternalErrorFunction(Spannable location, String message);