Presumably you're interested in V8 snapshots because you read this article about Electron:
http://blog.atom.io/2017/04/18/improvin ... -time.htmlAs noted in that article it is difficult to use V8 snapshot functionality correctly (you can't access the DOM) and any potential benefits depend a lot on the structure of the HTML/JS/CSS involved. For example, in Electron's case most of their performance gain came from improving their JavaScript "require" implementation and from optimizing CSS files. Those are both things that could be accomplished without the use of V8 snapshots.
Since usage is difficult and any potential performance benefits can likely be achieved by other means there are no plans to expose V8 snapshot functionality in CEF at this time.