Chrome and Chromium-based browsers or applications do not use the system FreeType library. Therefore these applications don't get the Infinality improvements. There isn't much that can be done unfortunately other than compiling Chromium using the system FreeType library. This can be accomplished by setting the build flag: use_system_freetype=true.

I will consider adding a Chromium PKGBUILD in here to support this, but compiling Chromium is generally not feasible unless you have an extremely strong computer.