Share LibrarySpecificUnits when possible

pkg/analyzer/lib/src/task/dart_work_manager.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 analyzer.src.task.dart_work_manager;
 
 import 'dart:collection';
 
 import 'package:analyzer/src/context/cache.dart';
 import 'package:analyzer/src/generated/engine.dart'
@@ skipping 92 matching lines @@
    * contexts.
    */
   CachePartition get privateAnalysisCachePartition =>
       context.privateAnalysisCachePartition;
 
   /**
    * Specifies that the client want the given [result] of the given [target]
    * to be computed with priority.
    */
   void addPriorityResult(AnalysisTarget target, ResultDescriptor result) {
-    priorityResultQueue.add(new TargetedResult(target, result));
+    priorityResultQueue
+        .add(new TargetedResult(context.canonicalizeTarget(target), result));
   }
 
   @override
   void applyChange(List<Source> addedSources, List<Source> changedSources,
       List<Source> removedSources) {
     addedSources = addedSources.where(_isDartSource).toList();
     changedSources = changedSources.where(_isDartSource).toList();
     removedSources = removedSources.where(_isDartSource).toList();
     // unknown queue
     unknownSourceQueue.addAll(addedSources);
@@ skipping 346 matching lines @@
     }
   }
 
   bool _shouldErrorsBeComputed(Source source) =>
       context.shouldErrorsBeAnalyzed(source);
 
   static bool _isDartSource(AnalysisTarget target) {
     return target is Source && AnalysisEngine.isDartFileName(target.fullName);
   }
 }