There are two libraries that might fit your need (it fits mine):
- Awesomium
http://awesomium.com/ with Navi (wrapper for Ogre)
https://github.com/khrona/Navi
- Berkelium
http://berkelium.org/
Both just strip down a bit then embedd Chromium (the open source part of Chrome, that is, 95% of Chrome) and provide a simple to use C++ interface to draw the result on a texture or throw some inputs (mouse & keyboard) to the virtual windows.
Awesomium is developped by a company and doesnt provide the source code. They also require licencing in some cases.
Berkelium was born at the time Awesomium became closed source because the developers of a game did need the sources so they made their own wrapper and provided it open source.
For having used both I can say that they basically provide the same basic features. However, Berkelium is easier to work with when you have a problem as you can tweak the code; while Awesomium is far more stable, efficient and flexible than Berkelium. Also they really listen to their users so having a company full time on this project is actually an important thing.
For one company work, I choose Berkelium because the open source stuff was required and they didn't want to spend money on the tech.
For my own game I'm choosing Awesomium because in the end it'll be free for me (until I become rich I guess) and I don't really need the source code and finally because I need the most flexibility ever for this project.
So, choose depending on your needs.