It’s easy to get caught thinking that Mylyn only provides access to traditional issue trackers like Bugzilla and Jira. It also features integration with Gerrit.
This screenshot shows the Planning perspective being used to work directly with Gerrit reviews.
You can manipulate the review directly from within Eclipse, browse changes, fetch a patch set (and clone the source repository if necessary), cherry pick, abandon, and more.
Naturally, it also includes the standard sort of great Mylyn support like the ability to schedule when you’re going to do the work and the task focused UI.