See #40220 (comment) for more context

Some customers would like to bring their own harfbuzz/ICU. Not clear if that would also require bringing their own freetype2. My own explorations around engine modularization have been more focused on networking and Skia - I'm not as famiilar with what it would take to split out some of the text rendering stack (or whether it would actually help things binary size wise).

/cc @jason-simmons @GaryQian who know a lot more about this area.