Roll to pickup pool changes

packages/package_config/lib/discovery_analysis.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.
 
 /// Analyse a directory structure and find packages resolvers for each
 /// sub-directory.
 ///
 /// The resolvers are generally the same that would be found by using
 /// the `discovery.dart` library on each sub-directory in turn,
 /// but more efficiently and with some heuristics for directories that
@@ skipping 73 matching lines @@
           if (packages == null || !entry.path.endsWith("/packages")) {
             findRoots(entry);
           }
         }
       }
       if (packages != null) {
         oldContexts.add(new _PackageContext(directory, packages, contexts));
         contexts = oldContexts;
       }
     }
+
     findRoots(directory);
     // If the root is not itself context root, add a the wrapper context.
     if (contexts.length == 1 && contexts[0].directory == directory) {
       return contexts[0];
     }
     return new _PackageContext(directory, root, contexts);
   }
 }
 
 class _PackageContext implements PackageContext {
   final Directory directory;
   final Packages packages;
   final List<PackageContext> children;
   _PackageContext(this.directory, this.packages, List<PackageContext> children)
       : children = new List<PackageContext>.unmodifiable(children);
 
   Map<Directory, Packages> asMap() {
     var result = new HashMap<Directory, Packages>();
     recurse(_PackageContext current) {
       result[current.directory] = current.packages;
       for (var child in current.children) {
         recurse(child);
       }
     }
+
     recurse(this);
     return result;
   }
 
   PackageContext operator [](Directory directory) {
     String path = directory.path;
     if (!path.startsWith(this.directory.path)) {
       throw new ArgumentError("Not inside $path: $directory");
     }
     _PackageContext current = this;
@@ skipping 28 matching lines @@
     return true;
   }
 }
 
 Packages _loadPackagesFile(File file) {
   var uri = new Uri.file(file.path);
   var bytes = file.readAsBytesSync();
   var map = pkgfile.parse(bytes, uri);
   return new MapPackages(map);
 }