Decouple WorkItem from Compiler

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

 // Copyright (c) 2015, 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.task;
 
 import 'dart:async' show EventSink, Future;
 
 import '../common/resolution.dart' show ResolutionImpact, ResolutionWorkItem;
 import '../common/tasks.dart' show CompilerTask;
@@ skipping 120 matching lines @@
     });
   }
 }
 
 /// A [ResolutionWorkItem] for a deserialized element.
 ///
 /// This will not resolve the element but only compute the [WorldImpact].
 class DeserializedResolutionWorkItem implements ResolutionWorkItem {
   final Element element;
   final WorldImpact worldImpact;
-  bool _isAnalyzed = false;
 
   DeserializedResolutionWorkItem(this.element, this.worldImpact);
 
   @override
-  bool get isAnalyzed => _isAnalyzed;
-
-  @override
-  WorldImpact run(Compiler compiler, ResolutionEnqueuer world) {
-    _isAnalyzed = true;
-    world.registerProcessedElement(element);
+  WorldImpact run() {
     return worldImpact;
   }
 }
 
 /// The interface for a system that supports deserialization of libraries and
 /// elements.
 abstract class DeserializerSystem {
   Future<LibraryElement> readLibrary(Uri resolvedUri);
   bool isDeserialized(Element element);
   bool hasResolvedAst(ExecutableElement element);
   ResolvedAst getResolvedAst(ExecutableElement element);
   bool hasResolutionImpact(Element element);
   ResolutionImpact getResolutionImpact(Element element);
   WorldImpact computeWorldImpact(Element element);
 }