Brave browser blockchain interface source code repository

Description of the issue:
I’m new to the entire browser development world and wanted to play around with brave’s crypto wallets. But it is little complicated to find the source code for the same. In specific, i’m trying to look into the source code of brave where the browser interacts with the ethereum blockchain. I’m also trying to integrate the incubed client into brave browser. If anyone could point me to the right direction it would be super helpful.