Use library name instead of filename.

dart/site/try/poi/poi.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 trydart.poi;
 
 import 'dart:async' show
     Completer,
     Future,
     Stream;
@@ skipping 37 matching lines @@
     ScopeContainerElement;
 
 import 'package:compiler/implementation/scanner/scannerlib.dart' show
     EOF_TOKEN,
     IDENTIFIER_TOKEN,
     KEYWORD_TOKEN,
     PartialClassElement,
     PartialElement,
     Token;
 
-import 'package:compiler/implementation/util/uri_extras.dart' show
-    relativize;
-
 /// Controls if this program should be querying Dart Mind. Used by tests.
 bool enableDartMind = true;
 
 /// Iterator over lines from standard input (or the argument array).
 Iterator<String> stdin;
 
 /// Iterator for reading lines from [io.stdin].
 class StdinIterator implements Iterator<String> {
   String current;
 
@@ skipping 257 matching lines @@
   StringBuffer get indented => buffer..write(indentation);
 
   void visitElement(Element e) {
     serialize(e, omitEnclosing: false);
   }
 
   void visitLibraryElement(LibraryElement e) {
     bool isFirst = true;
     serialize(
         e, omitEnclosing: true,
-        name: relativize(Uri.base, e.canonicalUri, false),
+        name: e.getLibraryName(),
         serializeMembers: () {
           // TODO(ahe): Include imported elements in libraries.
           e.forEachLocalMember((Element member) {
             if (!isFirst) {
               buffer.write(',');
             }
             buffer.write('\n');
             indented;
             serialize(member);
             isFirst = false;
@@ skipping 52 matching lines @@
     if (!omitEnclosing) {
       buffer.write(',\n');
       indented.write('"enclosing": ');
       element.enclosingElement.accept(this);
     }
     indentationLevel--;
     buffer.write('\n');
     indented.write('}');
   }
 }