Switch SSLTabHelper to use WebContentsUserData.

chrome/browser/ui/gtk/ssl_client_certificate_selector.cc

Index: chrome/browser/ui/gtk/ssl_client_certificate_selector.cc
diff --git a/chrome/browser/ui/gtk/ssl_client_certificate_selector.cc b/chrome/browser/ui/gtk/ssl_client_certificate_selector.cc
index 9745db954721b82e343dafbedee9024e3e1cdde4..5cf91c41551367709e83082c1132b8df83589956 100644
--- a/chrome/browser/ui/gtk/ssl_client_certificate_selector.cc
+++ b/chrome/browser/ui/gtk/ssl_client_certificate_selector.cc
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "chrome/browser/ssl_client_certificate_selector.h"
+#include "chrome/browser/ssl/ssl_client_certificate_selector.h"
 
 #include <gtk/gtk.h>
 
@@ -386,11 +386,12 @@ void SSLClientCertificateSelector::OnPromptShown(GtkWidget* widget,
 namespace chrome {
 
 void ShowSSLClientCertificateSelector(
-    TabContents* tab_contents,
+    content::WebContents* contents,
     const net::HttpNetworkSession* network_session,
     net::SSLCertRequestInfo* cert_request_info,
     const base::Callback<void(net::X509Certificate*)>& callback) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  TabContents* tab_contents = TabContents::FromWebContents(contents);
   (new SSLClientCertificateSelector(
       tab_contents, network_session, cert_request_info, callback))->Show();
 }