Register deserialized lazy statics.

pkg/compiler/lib/src/serialization/system.dart

 // Copyright (c) 2016, 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.serialization_system;
 
 import 'dart:async';
 import '../commandline_options.dart';
 import '../common.dart';
 import '../common/backend_api.dart';
@@ skipping 111 matching lines @@
   }
 
   @override
   WorldImpact computeWorldImpact(Element element) {
     ResolutionImpact resolutionImpact = getResolutionImpact(element);
     assert(invariant(element, resolutionImpact != null,
         message: 'No impact found for $element (${element.library})'));
     if (element is ExecutableElement) {
       getResolvedAst(element);
     }
+    if (element.isField && !element.isConst) {
+      FieldElement field = element;
+      if (field.isTopLevel || field.isStatic) {
+        if (field.constant == null) {
+          // TODO(johnniwinther): Find a cleaner way to do this. Maybe

[Siggi Cherem (dart-lang), 2016/05/31 16:48:11]

Is this the first call to register something that we have in the serialization
system? It would be nice to keep it that way. I'm ok submitting this as is, but
maybe it is worth investigating the alternatives at this time.

[Johnni Winther, 2016/06/02 09:25:44]

I'll look into it now (I have a solution in mind).

+          // `Feature.LAZY_FIELD` of the resolution impact should be used
+          // instead.
+          _compiler.backend.constants.registerLazyStatic(element);
+        }
+      }
+    }
     return _impactTransformer.transformResolutionImpact(resolutionImpact);
   }
 
   @override
   bool isDeserialized(Element element) {
     return deserializedLibraries.contains(element.library);
   }
 }
 
 const String WORLD_IMPACT_TAG = 'worldImpact';
@@ skipping 103 matching lines @@
   }
 
   @override
   void onElement(Element element, ObjectDecoder getDecoder(String tag)) {
     ObjectDecoder decoder = getDecoder(RESOLVED_AST_TAG);
     if (decoder != null) {
       _decoderMap[element] = decoder;
     }
   }
 }