[vala/0.40] webkit2gtk-4.0: Update to 2.21.4

[Rico Tzschichholz <ricotz src gnome org>]

commit 2fcdbe1e8a1ad14613a32b469452cd45d9071faf
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Wed Jun 13 15:33:19 2018 +0200

    webkit2gtk-4.0: Update to 2.21.4

 vapi/webkit2gtk-4.0.vapi               | 2 ++
 vapi/webkit2gtk-web-extension-4.0.vapi | 5 +++++
 2 files changed, 7 insertions(+)
---
diff --git a/vapi/webkit2gtk-4.0.vapi b/vapi/webkit2gtk-4.0.vapi
index 43c2e9d4f..89c758fae 100644
--- a/vapi/webkit2gtk-4.0.vapi
+++ b/vapi/webkit2gtk-4.0.vapi
@@ -1055,6 +1055,8 @@ namespace WebKit {
                public void restore_session_state (WebKit.WebViewSessionState state);
                public async WebKit.JavascriptResult run_javascript (string script, GLib.Cancellable? 
cancellable) throws GLib.Error;
                public async WebKit.JavascriptResult run_javascript_from_gresource (string resource, 
GLib.Cancellable? cancellable) throws GLib.Error;
+               [Version (since = "2.22")]
+               public async WebKit.JavascriptResult run_javascript_in_world (string script, string 
world_name, GLib.Cancellable? cancellable) throws GLib.Error;
                public async GLib.InputStream save (WebKit.SaveMode save_mode, GLib.Cancellable? cancellable) 
throws GLib.Error;
                public async bool save_to_file (GLib.File file, WebKit.SaveMode save_mode, GLib.Cancellable? 
cancellable) throws GLib.Error;
                [Version (since = "2.8")]
diff --git a/vapi/webkit2gtk-web-extension-4.0.vapi b/vapi/webkit2gtk-web-extension-4.0.vapi
index 6baed4dbe..e26be5ac7 100644
--- a/vapi/webkit2gtk-web-extension-4.0.vapi
+++ b/vapi/webkit2gtk-web-extension-4.0.vapi
@@ -2987,6 +2987,11 @@ namespace WebKit {
                public ScriptWorld ();
                [Version (since = "2.2")]
                public static unowned WebKit.ScriptWorld get_default ();
+               [Version (since = "2.22")]
+               public unowned string get_name ();
+               [CCode (has_construct_function = false)]
+               [Version (since = "2.22")]
+               public ScriptWorld.with_name (string name);
                [Version (since = "2.2")]
                public signal void window_object_cleared (WebKit.WebPage page, WebKit.Frame frame);
        }