From the World of Warcraft website
We’re adding a feature-limited web browser to World of Warcraft that will replace the in-game support system with a direct portal to the Battle.net Support site. Our aim is to give players in-game easy access to the site’s robust knowledge base and support contact system.
We’ve gone to great lengths to improve our website support systems and we want to offer access to all of its robust features in-game. The new browser will make it it easier to find information to help you resolve issues you’re experiencing or contact our representatives