Fixed bug in which double quotes were used as delimiters in messages.
Fixed bug in which double quotes were used as delimiters in messages.

R=neil.fraser@gmail.com

Review URL: https://codereview.appspot.com/14308043

git-svn-id: 2cf55447cea94972d775c94cce66c944ede0459c@1397 c400ca83-b69d-9dd7-9705-49c6b8615e23

Khan/blockly,Khan/blockly