Work requirement for v8 related project

I have a job requirement to convert one project using old v8 version [V8 6.1.534.41], to an updated v8 version [V8 v6.6.346.23]

The project I need to convert is this one:
https://github.com/RSATom/WebChimera.js

I have been using this project to enable playback of video files in Electron 2.x (which uses V8 6.1.534.41)[https://electronjs.org/blog/electron-2-0]
Now when I move to Electron 3.1.x, I'm unable to compile this library. Electron 3.1.x uses V8 v6.6.346.23 [https://electronjs.org/blog/electron-3-0].

I need the relevant code to be converted for compatibility with Electron 3.1.x

Src files to be converted lie in the folder: https://github.com/RSATom/WebChimera.js/tree/master/src

We expect this to be simple work for someone with knowledge of v8.