Fix webui cert viewer showing wrong cert chain on NSS and no chain on OpenSSL.

chrome/browser/ui/certificate_dialogs.h

Index: chrome/browser/ui/certificate_dialogs.h
diff --git a/chrome/browser/ui/certificate_dialogs.h b/chrome/browser/ui/certificate_dialogs.h
index 9787ffc769774f118cbce5d66be215f9fe19984e..a4f185614b0a08cfbacd3ae9d94b4f117609a2a9 100644
--- a/chrome/browser/ui/certificate_dialogs.h
+++ b/chrome/browser/ui/certificate_dialogs.h
@@ -18,8 +18,17 @@ void ShowCertSelectFileDialog(ui::SelectFileDialog* select_file_dialog,
                               gfx::NativeWindow parent,
                               void* params);
 
+// Show a dialog to save |cert| alone or the cert + its chain.
 void ShowCertExportDialog(content::WebContents* web_contents,
                           gfx::NativeWindow parent,
-                          net::X509Certificate::OSCertHandle cert);
+                          const scoped_refptr<net::X509Certificate>& cert);
+
+// Show a dialog to save the first certificate or the whole chain encompassed by
+// the iterators.
+void ShowCertExportDialog(
+    content::WebContents* web_contents,
+    gfx::NativeWindow parent,
+    net::X509Certificate::OSCertHandles::iterator certs_begin,
+    net::X509Certificate::OSCertHandles::iterator certs_end);
 
 #endif  // CHROME_BROWSER_UI_CERTIFICATE_DIALOGS_H_