Adrien - if you're looking to continue development on this patch, you can see if someone in #developers (see https://wiki.mozilla.org/IRC ) might be able to help you with the compilation issues. At a glance, it looks like you need to add some #includes (specifically, #include "nsDirectoryServiceUtils.h" and maybe #include "nsIFile.h" in this case).
Adrien - if you're looking to continue development on this patch, you can see if someone in #developers (see https:/ /wiki.mozilla. org/IRC ) might be able to help you with the compilation issues. At a glance, it looks like you need to add some #includes (specifically, #include "nsDirectorySer viceUtils. h" and maybe #include "nsIFile.h" in this case).