GitLab

The previous data didn't give us any indication of the actual error
rate but just the error distribution.

BUG=None

Review URL: https://chromiumcodereview.appspot.com/23653025

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@222023 0039d316-1c4b-4281-b951-d872f2087c98