Reapply "Fix URI encoding/decoding of + and space""

Updated test expectations for some tests for pkg/http, pkg/oauth2 and
pub to match the change.

TBR=lrn@google.com

Review URL: https://codereview.chromium.org//11659009

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@16426 260f80e4-7a28-3924-810f-c04153c831b5
diff --git a/test/authorization_code_grant_test.dart b/test/authorization_code_grant_test.dart
index c4ccc21..2b80cf4 100644
--- a/test/authorization_code_grant_test.dart
+++ b/test/authorization_code_grant_test.dart
@@ -50,7 +50,7 @@
               '?response_type=code'
               '&client_id=identifier'
               '&redirect_uri=http%3A%2F%2Fexample.com%2Fredirect'
-              '&scope=scope%20other%2Fscope'));
+              '&scope=scope+other%2Fscope'));
     });
 
     test('builds the correct URL with state', () {