Add missing change to common.js in previous CL.
Add missing change to common.js in previous CL.

git-svn-id: 2cf55447cea94972d775c94cce66c944ede0459c@855 c400ca83-b69d-9dd7-9705-49c6b8615e23

tjpalmer/blockly,tobyk100/blockly-trunk,tjpalmer/blockly,Khan/blockly,Khan/blockly,tobyk100/blockly-trunk,tobyk100/blockly-trunk,tobyk100/blockly-trunk