Remove BrowserList::GetLastActive usage from WebUI pages.

chrome/browser/ui/gtk/website_settings_popup_gtk.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // 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/website_settings_popup_gtk.h"
 
 #include "base/i18n/rtl.h"
 #include "base/string_number_conversions.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/certificate_viewer.h"
@@ skipping 495 matching lines @@
   int type = -1;
   gtk_tree_model_get(store, &it, 1, &value, 2, &type, -1);
 
   if (presenter_.get())
     presenter_->OnSitePermissionChanged(ContentSettingsType(type),
                                         ContentSetting(value));
 }
 
 void WebsiteSettingsPopupGtk::OnViewCertLinkClicked(GtkWidget* widget) {
   DCHECK_NE(cert_id_, 0);
-  ShowCertificateViewerByID(GTK_WINDOW(parent_), cert_id_);
+  ShowCertificateViewerByID(
+      tab_contents_->web_contents(), GTK_WINDOW(parent_), cert_id_);
   bubble_->Close();
 }