Rename "pathos" package to "path".

sdk/lib/_internal/dartdoc/lib/src/export_map.dart

 // Copyright (c) 2013, 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.
 
 /// This library uses the Dart analyzer to find the exports for a set of
 /// libraries. It stores these exports in an [ExportMap]. This is used to
 /// display exported members as part of the exporting library, since dart2js
 /// doesn't provide this information itself.
 library export_map;
 
 import 'dart:io';
 
 import 'package:analyzer_experimental/analyzer.dart';
-import 'package:pathos/path.dart' as pathos;
+import 'package:path/path.dart' as pathos;
 
 import 'dartdoc/utils.dart';
 
 /// A class that tracks which libraries export which other libraries.
 class ExportMap {
   /// A map from libraries to their [Export]s.
   ///
   /// Each key is the absolute path of a library on the filesystem, and each
   /// value is a list of [Export]s for that library. There's guaranteed to be
   /// only one [Export] of a given library in a given list.
@@ skipping 264 matching lines @@
 /// A simple visitor that collects import and export nodes.
 class _ImportExportCollector extends GeneralizingASTVisitor {
   final imports = <ImportDirective>[];
   final exports = <ExportDirective>[];
 
   _ImportExportCollector();
 
   visitImportDirective(ImportDirective node) => imports.add(node);
   visitExportDirective(ExportDirective node) => exports.add(node);
 }