Initial support for HSTS certificate locking. This isn't a finished work, but

chrome/browser/ui/gtk/certificate_dialogs.cc

Index: chrome/browser/ui/gtk/certificate_dialogs.cc
===================================================================
--- chrome/browser/ui/gtk/certificate_dialogs.cc	(revision 80507)
+++ chrome/browser/ui/gtk/certificate_dialogs.cc	(working copy)
@@ -90,7 +90,7 @@
 Exporter::Exporter(gfx::NativeWindow parent,
                    net::X509Certificate::OSCertHandle cert)
     : select_file_dialog_(SelectFileDialog::Create(this)) {
-  x509_certificate_model::GetCertChainFromCert(cert, &cert_chain_list_);
+  net::X509Certificate::GetCertChainFromCert(cert, &cert_chain_list_);
 
   // TODO(mattm): should this default to some directory?
   // Maybe SavePackage::GetSaveDirPreference? (Except that it's private.)
@@ -112,7 +112,7 @@
   if (select_file_dialog_.get())
     select_file_dialog_->ListenerDestroyed();
 
-  x509_certificate_model::DestroyCertChain(&cert_chain_list_);
+  net::X509Certificate::DestroyCertChain(&cert_chain_list_);
 }
 
 void Exporter::FileSelected(const FilePath& path, int index, void* params) {