Merge the dart:uri library into dart:core and update the Uri class

tests/compiler/dart2js/analyze_api_test.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.
 
 library analyze_api;
 
 import "package:expect/expect.dart";
-import 'dart:uri';
 import '../../../sdk/lib/_internal/libraries.dart';
 import 'analyze_helper.dart';
 
 /**
  * Map of white-listed warnings and errors.
  *
  * Only add a white-listing together with a bug report to dartbug.com and add
  * the bug issue number as a comment on the white-listing.
  *
  * Use an identifiable suffix of the file uri as key. Use a fixed substring of
  * the error/warning message in the list of white-listings for each file.
  */
 // TODO(johnniwinther): Support canonical URIs as keys and message kinds as
 // values.
 const Map<String, List<String>> WHITE_LIST = const {
   'html_dart2js.dart':
       const ['Warning: Using "new Symbol"', // Issue 10565.
              // Issue 10688:
              'Warning: no property named',
              "Warning: 'UnsupportedError' is not callable",
              "Warning: no operator [] in class Iterable"],
 };
 
 void main() {
   var uriList = new List<Uri>();
   LIBRARIES.forEach((String name, LibraryInfo info) {
     if (info.documented) {
-      uriList.add(new Uri.fromComponents(scheme: 'dart', path: name));
+      uriList.add(new Uri(scheme: 'dart', path: name));
     }
   });
   analyze(uriList, WHITE_LIST);
 }