Chromium Bug Hotlists
Labels are now replaced with hotlists in the issue tracker. A hotlist in Google Issue Tracker is a list of specific issues, where you manually add or remove the issues. A new issue only appears in a hotlist if you or another user explicitly adds it and it remains in the hotlist regardless of any changes that are made to it. Hotlists allow you to track a set of issues related to a common goal, such as a product launch or particular feature.
A bookmark group in Google Issue Tracker is a collection of hotlists and saved searches. Bookmark groups allow you to easily collect and track sets of issues.
All labels in Monorail have been migrated to either a hotlist or custom field in Issue Tracker. Note: the majority of Monorail labels have been migrated to the “Chromium Labels” custom field.