Chrome is a web browser developed by Google—the company that invests in WebRTC development very intensively. Chrome usually has the most advanced support of WebRTC features than other browsers, and new and experimental features usually appear first in Chrome.
Thus, it is not surprising that Chrome has good tools for debugging the WebRTC stack. Some of the relevant details will be covered in this recipe.
For this recipe, you will need Chrome installed. It is a multiplatform, so you can download the relevant installation pack from its home page at https://www.google.com/chrome/browser/.
There are two known Chrome mechanisms that can be useful for debugging WebRTC applications:
WebRTC-internals
Logging
In most cases, you probably will use the first one.