Add Joe Knoll (joe.knoll@workday.com> to the AUTHORS file.

BUG=NONE
TEST=NONE

Review URL: https://chromiumcodereview.appspot.com/23007002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@217513 0039d316-1c4b-4281-b951-d872f2087c98

AUTHORS

@@ -110,6 +110,7 @@ Jesus Sanchez-Palencia <jesus.sanchez-palencia.fernandez.fil@intel.com>
 Jin Yang <jin.a.yang@intel.com>
 Jingwei Liu <kingweiliu@gmail.com>
 Jinwoo Song <jinwoo7.song@samsung.com>
+Joe Knoll <joe.knoll@workday.com>
 Joe Thomas <mhx348@motorola.com>
 Joel Stanley <joel@jms.id.au>
 Johannes Rudolph <johannes.rudolph@googlemail.com>