GitLab

BUG=chromium:100732
TEST=Launch ChromeOS and go to the System settings page.  Tap or press and hold the brightness buttons to adjust the screen brightness.


Review URL: http://codereview.chromium.org/8340002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@108022 0039d316-1c4b-4281-b951-d872f2087c98