webkit-test-results.appspot.com loads the dashboard for Chromium by default
https://bugs.webkit.org/show_bug.cgi?id=114381

Reviewed by Benjamin Poulain.

Changed the defaults.

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


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@148151 268f45cc-cd09-0410-ab3c-d52691b4dbfc