Add groby to c/b/ui/cocoa/OWNERS!

BUG=none
NOTRY=true

Review URL: https://codereview.chromium.org/128713005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@243669 0039d316-1c4b-4281-b951-d872f2087c98

chrome/app/nibs/OWNERS

 asvitkine@chromium.org
 avi@chromium.org
+groby@chromium.org
 mark@chromium.org
 rohitrao@chromium.org
 rsesek@chromium.org

chrome/browser/ui/cocoa/OWNERS

 asvitkine@chromium.org
 avi@chromium.org
+groby@chromium.org
 jeremy@chromium.org
 mark@chromium.org
 rohitrao@chromium.org