Chrome uses the system certificate store. On Windows, that means it's the same one as IE, so you can probably Google for instructions. I'm not familiar with Mac

Chrome uses the system certificate store. On Windows, that means it's the same one as IE, so you can probably Google for instructions. I'm not familiar with Mac. On Linux, it uses the system NSS library. NSS is built with a set of root CAs so you would have to see what your distribution chose to include.