dart2js: register holder of constant in initial value of a static field.

pkg/compiler/lib/src/js_emitter/program_builder.dart

 // Copyright (c) 2014, 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.js_emitter.program_builder;
 
 import 'js_emitter.dart' show computeMixinClass;
 import 'model.dart';
 
 import '../common.dart';
@@ skipping 191 matching lines @@
     Iterable<VariableElement> staticNonFinalFields =
         backend.constants.getStaticNonFinalFieldsForEmission();
     return Elements.sortedByPosition(staticNonFinalFields)
         .map(_buildStaticField)
         .toList(growable: false);
   }
 
   StaticField _buildStaticField(Element element) {
     JavaScriptConstantCompiler handler = backend.constants;
     ConstantValue initialValue = handler.getInitialValueFor(element).value;
+    // TODO(zarah): The holder should not be registered during building of
+    // a static field.
+    _registry.registerHolder(namer.globalObjectForConstant(initialValue));
     js.Expression code = _task.emitter.constantReference(initialValue);
     String name = namer.getNameOfGlobalField(element);
     bool isFinal = false;
     bool isLazy = false;
     return new StaticField(element,
                            name, _registry.registerHolder(r'$'), code,
                            isFinal, isLazy);
   }
 
   List<StaticField> _buildStaticLazilyInitializedFields(
@@ skipping 436 matching lines @@
       _registry.registerConstant(outputUnit, constantValue);
       assert(!_constants.containsKey(constantValue));
       String name = namer.constantName(constantValue);
       String constantObject = namer.globalObjectForConstant(constantValue);
       Holder holder = _registry.registerHolder(constantObject);
       Constant constant = new Constant(name, holder, constantValue);
       _constants[constantValue] = constant;
     }
   }
 }