Fix bad space handling in Uris.

tests/compiler/dart2js/path with spaces/library space/part space/part space.dart

Index: tests/compiler/dart2js/path with spaces/library space/part space/part space.dart
diff --git a/tests/language/first_class_types_lib1.dart b/tests/compiler/dart2js/path with spaces/library space/part space/part space.dart
similarity index 62%
copy from tests/language/first_class_types_lib1.dart
copy to tests/compiler/dart2js/path with spaces/library space/part space/part space.dart
index baadc66015a5ced9bfbdc10f1180715ee714a547..58aff0fb6e8a8e53197e400cf859718ce5e65606 100644
--- a/tests/language/first_class_types_lib1.dart
+++ b/tests/compiler/dart2js/path with spaces/library space/part space/part space.dart	
@@ -1,7 +1,7 @@
-// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2014, 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 lib1;
+part of spaces;
 
-class A {}
+bar() => 499;