Expand slow marker to linux/mac for pub/test/serve/web_socket/url_to_asset_id_test

Review URL: https://codereview.chromium.org//247473002

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@35259 260f80e4-7a28-3924-810f-c04153c831b5
diff --git a/sdk/lib/_internal/pub/pub.status b/sdk/lib/_internal/pub/pub.status
index 5ff7079..9cb5d30 100644
--- a/sdk/lib/_internal/pub/pub.status
+++ b/sdk/lib/_internal/pub/pub.status
@@ -3,10 +3,10 @@
 # BSD-style license that can be found in the LICENSE file.
 
 test/hosted/version_negotiation_test: Pass, Timeout # Issue 14346
+test/serve/web_socket/url_to_asset_id_test: Pass, Slow
 
 [ $runtime == vm && $system == windows ]
 test/serve/warns_on_assets_paths_test: Pass, Fail # Issue 15741
-test/serve/web_socket/url_to_asset_id_test: Pass, Slow
 
 # Pub only runs on the VM, so just rule out all compilers.
 [ $compiler == dart2js || $compiler == dart2dart ]