Added ChromeOS UI code OWNERS file.

BUG=none
TEST=none


Review URL: https://chromiumcodereview.appspot.com/10830103

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@149783 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/chromeos/OWNERS

+davemoore@chromium.org
+derat@chromium.org
+dpolukhin@chromium.org
+nkostylev@chromium.org
+oshima@chromium.org
+satorux@chromium.org
+zelidrag@chromium.org