Avoid generating VariableUse nodes with non-identifier names

sdk/lib/_internal/compiler/implementation/js_emitter/interceptor_emitter.dart

 // Copyright (c) 2013, 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.js_emitter;
 
 class InterceptorEmitter extends CodeEmitterHelper {
   final Set<String> interceptorInvocationNames = new Set<String>();
 
   void recordMangledNameOfMemberMethod(FunctionElement member, String name) {
@@ skipping 396 matching lines @@
         handler.getConstantsForEmission(task.compareConstants);
     for (Constant constant in constants) {
       if (constant is TypeConstant) {
         TypeConstant typeConstant = constant;
         Element element = typeConstant.representedType.element;
         if (element is ClassElement) {
           ClassElement classElement = element;
           if (!analysis.needsClass(classElement)) continue;
 
           elements.add(backend.emitter.constantReference(constant));
-          elements.add(js(namer.isolateAccess(classElement)));
+          elements.add(namer.elementAccess(classElement));
 
           // Create JavaScript Object map for by-name lookup of generative
           // constructors.  For example, the class A has three generative
           // constructors
           //
           //     class A {
           //       A() {}
           //       A.foo() {}
           //       A.bar() {}
           //     }
           //
           // Which are described by the map
           //
           //     {"": A.A$, "foo": A.A$foo, "bar": A.A$bar}
           //
           // We expect most of the time the map will be a singleton.
           var properties = [];
           for (Element member in analysis.constructors(classElement)) {
             properties.add(
                 new jsAst.Property(
                     js.string(member.name),
-                    new jsAst.VariableUse(
-                        backend.namer.isolateAccess(member))));
+                    backend.namer.elementAccess(member)));
           }
 
           var map = new jsAst.ObjectInitializer(properties);
           elements.add(map);
         }
       }
     }
 
     jsAst.ArrayInitializer array = new jsAst.ArrayInitializer.from(elements);
     String name =
         backend.namer.getNameOfGlobalField(backend.mapTypeToInterceptor);
     jsAst.Expression assignment =
         js('${task.isolateProperties}.# = #', [name, array]);
 
     buffer.write(jsAst.prettyPrint(assignment, compiler));
     buffer.write(N);
   }
 }