Rename new Uri.fromString to Uri.parse.

pkg/oauth2/lib/src/handle_access_token_response.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 handle_access_token_response;
 
 import 'dart:io';
 import 'dart:json' as JSON;
 import 'dart:uri';
 
@@ skipping 112 matching lines @@
       '"${parameters["error"]}"');
 
   for (var name in ['error_description', 'error_uri']) {
     var value = parameters[name];
     validate(value == null || value is String,
         'parameter "$name" was not a string, was "$value"');
   }
 
   var description = parameters['error_description'];
   var uriString = parameters['error_uri'];
-  var uri = uriString == null ? null : new Uri.fromString(uriString);
+  var uri = uriString == null ? null : Uri.parse(uriString);
   throw new AuthorizationException(parameters['error'], description, uri);
 }
 
 void _validate(
     http.Response response,
     Uri tokenEndpoint,
     bool condition,
     String message) {
   if (condition) return;
   throw new FormatException('Invalid OAuth response for "$tokenEndpoint": '
       '$message.\n\n${response.body}');
 }