Add new args in preparation of added ways to generate reports (flakyness, failures) from the buildbot.
Add new args in preparation of added ways to generate
reports (flakyness, failures) from the buildbot.

Review URL: http://codereview.chromium.org/165343

git-svn-id: http://src.chromium.org/svn/trunk/src@23170 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 5e4e640f742b7dff9b53dd99e6ab52907b0c5224
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser