No browser would ever do this. It's a pain in the ass to do to begin with but it's also an absurdly complex optimization for a specific use case that would barely pay off in practice. It wouldn't work unless you were shipping the same version of skia as the embedded application and you'd have to do all sorts of weird stuff to make the ABIs match up (the native C/C++ ABI is not the same as the one wasm uses at runtime)