It is the 3rd step after - renaming PlatformCertificateInfo to CertificateInfo (bug124150) - moving CertificateInfo from WebKit2 to WebCore (bug124720)
Created attachment 218689 [details] Patch
Comment on attachment 218689 [details] Patch Clearing review? flag, as I have no idea if this is actually the right patch to apply :) However it does build and is the last part of bug 118520.