Add cc_unittests to the dashboards
https://bugs.webkit.org/show_bug.cgi?id=108878

Reviewed by Dirk Pranke.

* TestResultServer/static-dashboards/builders.js:
(loadBuildersList):
* TestResultServer/static-dashboards/dashboard_base.js:
(currentBuilderGroupCategory):


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@141941 268f45cc-cd09-0410-ab3c-d52691b4dbfc