Add --use-more-webui runtime flag to toggle WebUI replacements for native dialogs.

chrome/browser/ui/gtk/certificate_viewer.cc

Index: chrome/browser/ui/gtk/certificate_viewer.cc
diff --git a/chrome/browser/ui/gtk/certificate_viewer.cc b/chrome/browser/ui/gtk/certificate_viewer.cc
index e062fec3335c085c38f05c66bd9d1cb496646473..2f25189a34a6206076300abffe6e2f5b57e84a49 100644
--- a/chrome/browser/ui/gtk/certificate_viewer.cc
+++ b/chrome/browser/ui/gtk/certificate_viewer.cc
@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "chrome/browser/ui/gtk/certificate_viewer.h"
-
 #include <gtk/gtk.h>
 
 #include <algorithm>
@@ -14,6 +12,7 @@
 #include "base/string_number_conversions.h"
 #include "base/time.h"
 #include "base/utf_string_conversions.h"
+#include "chrome/browser/certificate_viewer.h"
 #include "chrome/browser/ui/gtk/certificate_dialogs.h"
 #include "chrome/browser/ui/gtk/gtk_util.h"
 #include "chrome/common/net/x509_certificate_model.h"
@@ -21,6 +20,7 @@
 #include "net/base/x509_certificate.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/gfx/gtk_util.h"
+#include "ui/gfx/native_widget_types.h"
 
 namespace {
 
@@ -707,14 +707,14 @@ void CertificateViewer::Show() {
 
 } // namespace
 
-void ShowCertificateViewer(gfx::NativeWindow parent,
-                           net::X509Certificate::OSCertHandle cert) {
+void ShowNativeCertificateViewer(gfx::NativeWindow parent,
+                                 net::X509Certificate::OSCertHandle cert) {
   net::X509Certificate::OSCertHandles cert_chain;
   x509_certificate_model::GetCertChainFromCert(cert, &cert_chain);
   (new CertificateViewer(parent, cert_chain))->Show();
 }
 
-void ShowCertificateViewer(gfx::NativeWindow parent,
-                           net::X509Certificate* cert) {
-  ShowCertificateViewer(parent, cert->os_cert_handle());
+void ShowNativeCertificateViewer(gfx::NativeWindow parent,
+                                 net::X509Certificate* cert) {
+  ShowNativeCertificateViewer(parent, cert->os_cert_handle());
 }