Official Google Blog: Pagination comes to Google Docs

Updates to the increasingly tightly-coupled Google Docs/Google Chrome

Pagination also changes what’s possible with printing in modern browsers. We’ve worked closely with the Chrome team to implement a recent web standard so we can support a feature called native printing. Before, if you wanted to print your document we’d need to first convert it into a PDF, which you would then need to open and print yourself. With native printing, you can print directly from your browser and the printed document will always exactly match what you see on your screen.
For now, native printing is only available in Google Chrome, but we’re hoping other browsers will implement the same web standard so everyone can have the best possible printing experience with Docs.

Official Google Blog: Pagination comes to Google Docs