It would be great, but the API support is not there, which is why there aren't any extensions to spoof your user-agent either. Compared to Firefox extensions (w

It would be great, but the API support is not there, which is why there aren't any extensions to spoof your user-agent either. Compared to Firefox extensions (which basically let you do everything), Chrome extensions are much more fine-grained and can only use APIs specifically designed for use with extensions. There are several features that Chrome extensions developers have been requesting, such as this and the ability to prevent elements from being loaded (which is why there is no noscript and all the ad blockers are only half-baked solutions)