Currently we duplicate the SVG data URL for the gear icon (shown in the top left of the dashboard) up to its fill color for each of its three states: collapsed, hover, and expanded. We can simplify the CSS selectors for the gear icon by treating the gear icon as a mask using -webkit-mask-image and specifying the appropriate fill color using the CSS property background-color.
Created attachment 260728 [details] Patch
Comment on attachment 260728 [details] Patch Clearing flags on attachment: 260728 Committed r189488: <http://trac.webkit.org/changeset/189488>
All reviewed patches have been landed. Closing bug.