Allow multiple dirs per package in the data returned by "pub list".

pkg/analysis_server/lib/src/analysis_server.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 analysis.server;
 
 import 'dart:async';
 import 'dart:collection';
 
 import 'package:analysis_server/src/analysis_logger.dart';
@@ skipping 30 matching lines @@
   /**
    * The default options used to create new analysis contexts.
    */
   AnalysisOptionsImpl defaultOptions = new AnalysisOptionsImpl();
 
   AnalysisServerContextDirectoryManager(this.analysisServer, ResourceProvider resourceProvider)
       : super(resourceProvider);
 
   @override
   void addContext(Folder folder, File pubspecFile) {
-    Map<String, Folder> packageMap =
+    Map<String, List<Folder>> packageMap =
         analysisServer.packageMapProvider.computePackageMap(folder);
     ContextDirectory contextDirectory = new ContextDirectory(
         analysisServer.defaultSdk, resourceProvider, folder, packageMap);
     analysisServer.folderMap[folder] = contextDirectory;
     AnalysisContext context = contextDirectory.context;
     context.analysisOptions = new AnalysisOptionsImpl.con1(defaultOptions);
     analysisServer.schedulePerformAnalysisOperation(context);
   }
 
   @override
@@ skipping 520 matching lines @@
    * The root [Folder] of this [ContextDirectory].
    */
   final Folder _folder;
 
   /**
    * The [AnalysisContext] of this [_folder].
    */
   AnalysisContext _context;
 
   ContextDirectory(DartSdk sdk, this._resourceProvider, this._folder,
-      Map<String, Folder> packageMap) {
+      Map<String, List<Folder>> packageMap) {
     // create AnalysisContext
     _context = AnalysisEngine.instance.createAnalysisContext();
     // TODO(scheglov) replace FileUriResolver with an Resource based resolver
     List<UriResolver> resolvers = <UriResolver>[new DartUriResolver(sdk),
         new FileUriResolver(),
     ];
     if (packageMap != null) {
       resolvers.add(new PackageMapUriResolver(_resourceProvider, packageMap));
     }
     _context.sourceFactory = new SourceFactory(resolvers);
@@ skipping 10 matching lines @@
 /**
  * An enumeration of the services provided by the server domain.
  */
 class ServerService extends Enum2<ServerService> {
   static const ServerService STATUS = const ServerService('STATUS', 0);
 
   static const List<ServerService> VALUES = const [STATUS];
 
   const ServerService(String name, int ordinal) : super(name, ordinal);
 }