[epiphany] web-extension: Fix the build with WebKitGTK+ 2.13.2

[Carlos Garcia Campos <carlosgc src gnome org>]

commit 5e7ae2993a443432f26739fba5ad1e9aa9f2f6dd
Author: Carlos Garcia Campos <cgarcia igalia com>
Date:   Thu Jun 23 11:28:47 2016 +0200

    web-extension: Fix the build with WebKitGTK+ 2.13.2
    
    Unstable DOM API changed in 2.13.2

 embed/web-extension/ephy-web-overview.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/embed/web-extension/ephy-web-overview.c b/embed/web-extension/ephy-web-overview.c
index 90fa07e..dd05e13 100644
--- a/embed/web-extension/ephy-web-overview.c
+++ b/embed/web-extension/ephy-web-overview.c
@@ -146,7 +146,11 @@ ephy_web_overview_model_urls_changed (EphyWebOverviewModel *model,
 
       class_list = webkit_dom_element_get_class_list (webkit_dom_node_get_parent_element (WEBKIT_DOM_NODE 
(item->anchor)));
       if (class_list && webkit_dom_dom_token_list_contains (class_list, "overview-removed"))
+#if WEBKIT_CHECK_VERSION(2, 13, 2)
+        webkit_dom_dom_token_list_remove (class_list, NULL, "overview-removed", NULL);
+#else
         webkit_dom_dom_token_list_remove (class_list, "overview-removed", NULL);
+#endif
 
       webkit_dom_element_set_attribute (item->anchor, "href", url->url, NULL);
       webkit_dom_element_set_attribute (item->anchor, "title", url->title, NULL);