Revert "Switch libraries to using new tags."

sdk/lib/uri/uri.dart

Index: sdk/lib/uri/uri.dart
diff --git a/sdk/lib/uri/uri.dart b/sdk/lib/uri/uri.dart
index 4933d9d625b2f165882d795bdd3c1e272c3fd07d..9f1d73b2df5e592b9463ecef56c9a4e992ec3095 100644
--- a/sdk/lib/uri/uri.dart
+++ b/sdk/lib/uri/uri.dart
@@ -2,13 +2,13 @@
 // 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 dart.uri;
+#library('dart:uri');
 
-import 'dart:math';
-import 'dart:utf';
+#import('dart:math');
+#import('dart:utf');
 
-part 'encode_decode.dart';
-part 'helpers.dart';
+#source('encode_decode.dart');
+#source('helpers.dart');
 
 /**
  * A parsed URI, inspired by Closure's [URI][] class. Implements [RFC-3986][].