Google has added delivery icons to the local pack listings that Google can send searchers directly to an online delivery service. If you search for [McDonalds] you might be able to see it, here is a screen shot (click to enlarge it):

When you click on the icon, it takes you into the ondemandplatform.google.com where you can pick a delivery service for the food.

Joy Hawkins first spotted this last night and posted about it on Local Search Forums and Twitter.

Google has offered delivery buttons in the local results before but not like this.

Forum discussion at Local Search Forums and Twitter.