Support serialization of all resolved asts from dart:core

pkg/compiler/lib/src/cps_ir/cps_ir_builder_task.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.
 
 library dart2js.ir_builder_task;
 
 import 'package:js_runtime/shared/embedded_names.dart'
     show JsBuiltin, JsGetName;
 
 import '../closure.dart' as closure;
@@ skipping 2249 matching lines @@
       arguments.insert(0, irBuilder.buildNullConstant());
     }
     // Use default values from the effective target, not the immediate target.
     ConstructorElement target;
     if (constructor == compiler.symbolConstructor) {
       // The Symbol constructor should perform validation of its argument
       // which is not expressible as a Dart const constructor.  Instead, the
       // libraries contain a dummy const constructor implementation that
       // doesn't perform validation and the compiler compiles a call to
       // (non-const) Symbol.validated when it sees new Symbol(...).
-      target = compiler.symbolValidatedConstructor;
+      target = helpers.symbolValidatedConstructor;
     } else {
       target = constructor.implementation;
     }
     while (target.isRedirectingFactory && !target.isCyclicRedirection) {
       target = target.effectiveTarget.implementation;
     }
 
     callStructure = normalizeStaticArguments(callStructure, target, arguments);
     TypeMask allocationSiteType;
 
@@ skipping 1734 matching lines @@
       _backend.jsInteropAnalysis.hasAnonymousAnnotation(element.contextClass);
 
   String getJsInteropTargetPath(FunctionElement element) {
     return '${_backend.namer.fixedBackendPath(element)}.'
         '${_backend.nativeData.getFixedBackendName(element)}';
   }
 
   DartType get jsJavascriptObjectType =>
       _backend.helpers.jsJavaScriptObjectClass.thisType;
 }