Not all needed arguments are passed on to the wxWebKit build script. The method of passing arguments is also not very intuitive.
Created attachment 27275 [details]
In order to fix this bug, a slight adjustment was made to the checkForArgumentAndRemoveFromARGV() function in webkitdirs.pm. See changelog for details.
Comment on attachment 27275 [details]
Looks fine, r=me
Landed in r40556, thanks!