Automattic/jetpack — pull request #956 by kwight (2014-08-07 17:43:21+00:00)
Title: Site Logo: Add the WordPress.com Site Logo feature to Jetpack.

Site Logo allows a user to upload a logo that will persist and be displayed in all themes that support the feature.

WordPress.com support page: http://en.support.wordpress.com/site-logo/

Standalone plugin: https://github.com/Automattic/site-logo