NPAPI for Google Chrome Extension in Objective-C example?

I searched all Internet but can't find any example of working NPAPI plugin (in Objective-C for Mac OS) which is called from Google Chrome Extension. I'm very want to get such Xcode example, please help if someone have o开发者_高级运维ne.

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You don't actually need one example plugin that does all those things; how an NPAPI plugin is implemented internally has no effect on how it's called from the browser. The API is always the same C API.

Start with a simple Mac plugin (like this one), change the .c to a .m (or add new .m files), and use as much Objective-C as you like in the implementation.

Then once that's built, follow the instructions for using an NPAPI plugin in a Chrome extension.