Add fast-mode Uri class.

tests/corelib/uri_test.dart

 // Copyright (c) 2012, 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 uriTest;
 
 import "package:expect/expect.dart";
 import 'dart:convert';
 
 testUri(String uriText, bool isAbsolute) {
@@ skipping 178 matching lines @@
   testResolve("s://h/p1/p2/", ".");
   testResolve("s://h/p1/p2/", "./");
   testResolve("s://h/p1/", "..");
   testResolve("s://h/p1/", "../");
   testResolve("s://h/", "../..");
   testResolve("s://h/", "../../");
   testResolve("s://h/p1/%20", "../%20");
   testResolve("s://h/", "../../../..");
   testResolve("s://h/", "../../../../");
 
-  base = Uri.parse("s://h/p?q#f%20");  // A non-simpe base
+  base = Uri.parse("s://h/p?q#f%20");  // A non-simpe base.
   // Simple references:
   testResolve("s2://h2/P?Q#F", "s2://h2/P?Q#F");
   testResolve("s://h2/P?Q#F", "//h2/P?Q#F");
   testResolve("s://h/P?Q#F", "/P?Q#F");
   testResolve("s://h/p?Q#F", "?Q#F");
   testResolve("s://h/p?q#F", "#F");
   testResolve("s://h/p?q", "");
   // Non-simple references:
   testResolve("s2://I@h2/P?Q#F%20", "s2://I@h2/P?Q#F%20");
   testResolve("s://I@h2/P?Q#F%20", "//I@h2/P?Q#F%20");
@@ skipping 643 matching lines @@
 String dump(Uri uri) {
   return "URI: $uri\n"
       "  Scheme:    ${uri.scheme} #${uri.scheme.length}\n"
       "  User-info: ${uri.userInfo} #${uri.userInfo.length}\n"
       "  Host:      ${uri.host} #${uri.host.length}\n"
       "  Port:      ${uri.port}\n"
       "  Path:      ${uri.path} #${uri.path.length}\n"
       "  Query:     ${uri.query} #${uri.query.length}\n"
       "  Fragment:  ${uri.fragment} #${uri.fragment.length}\n";
 }