Ideally, any patching for the class file should really be done as a subclass, as well as any more complex logic. That way, if the protocol json file is changed, it can be just updated without breaking anything.
Anyways, generated class is here: https://github.com/fake-name/ChromeController/blob/master/Ch...
Oh, as an aside, you're actually missing a significant chunk of the protocol json file, mainly because there are actually two of them. There's a `browser_protocol.json` AND a `browser_protocol.json` file. They're both produced as build artifacts, so I can't point to them in the source, but the total json size should be > 800KB (mirror in chromecontroller: https://github.com/fake-name/ChromeController/tree/master/Ch... ).
As it is, this should kind of just splat into your source tree, but I don't want to move everything around without at least asking you how you want things structured.