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

pkg/http/test/safe_http_server.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 safe_http_server;
 
 import 'dart:async';
 import 'dart:io';
-import 'dart:uri';
 
 // TODO(nweiz): remove this when issue 9140 is fixed.
 /// A wrapper around [HttpServer] that swallows errors caused by requests
 /// behaving badly. This provides the following guarantees:
 ///
 /// * The [SafeHttpServer.listen] onError callback will only emit server-wide
 ///   errors. It will not emit errors for requests that were unparseable or
 ///   where the connection was closed too soon.
 /// * [HttpResponse.done] will emit no errors.
 ///
@@ skipping 114 matching lines @@
   Future<HttpResponse> addStream(Stream<List<int>> stream) =>
     _inner.addStream(stream);
   Future close() => _inner.close();
   void write(Object obj) => _inner.write(obj);
   void writeAll(Iterable objects, [String separator = ""]) =>
     _inner.writeAll(objects, separator);
   void writeCharCode(int charCode) => _inner.writeCharCode(charCode);
   void writeln([Object obj = ""]) => _inner.writeln(obj);
   void addError(error) => _inner.addError(error);
 }