[vala] webkit2gtk-web-extension-4.0: add missing *-custom.vala

[Evan Nemerson <evann src gnome org>]

commit c988fb21bc77d22b4705ab8fbd7e75647b488526
Author: Evan Nemerson <evan nemerson com>
Date:   Thu Oct 16 09:31:06 2014 -0700

    webkit2gtk-web-extension-4.0: add missing *-custom.vala

 vapi/metadata/WebKit2WebExtension-4.0-custom.vala |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)
---
diff --git a/vapi/metadata/WebKit2WebExtension-4.0-custom.vala 
b/vapi/metadata/WebKit2WebExtension-4.0-custom.vala
new file mode 100644
index 0000000..a994a77
--- /dev/null
+++ b/vapi/metadata/WebKit2WebExtension-4.0-custom.vala
@@ -0,0 +1,5 @@
+namespace WebKit {
+       namespace DOM {
+               public delegate void EventTargetFunc (WebKit.DOM.EventTarget target, WebKit.DOM.Event event);
+       }
+}