Chromium started to move from gyp to gn a while ago. Soon, the v8 build will be fully supported on gn. While there's no immediate plan to remove the gyp files right away, gyp itself will become unsupported the less people use it.

Consider planning for moving to gn: https://chromium.googlesource.com/chromium/src/+/master/tools/gn/README.md