[epiphany] Add support for DNS prefetching when using WebKit2

[Carlos Garcia Campos <carlosgc src gnome org>]

commit b3351b02000d5ab223202b1ac083b73b418160b2
Author: Carlos Garcia Campos <cgarcia igalia com>
Date:   Wed Feb 20 14:20:30 2013 +0100

    Add support for DNS prefetching when using WebKit2
    
    https://bugzilla.gnome.org/show_bug.cgi?id=684445

 embed/ephy-embed-prefs.c          |    1 +
 lib/widgets/ephy-location-entry.c |   10 +++++++++-
 2 files changed, 10 insertions(+), 1 deletions(-)
---
diff --git a/embed/ephy-embed-prefs.c b/embed/ephy-embed-prefs.c
index e470e1f..e039957 100644
--- a/embed/ephy-embed-prefs.c
+++ b/embed/ephy-embed-prefs.c
@@ -685,6 +685,7 @@ ephy_embed_prefs_init (void)
   webkit_settings = webkit_settings_new_with_settings ("enable-developer-extras", TRUE,
                                                        "enable-fullscreen", TRUE,
                                                        "enable-site-specific-quirks", TRUE,
+                                                       "enable-dns-prefetching", TRUE,
                                                        NULL);
 #else
   webkit_settings = webkit_web_settings_new ();
diff --git a/lib/widgets/ephy-location-entry.c b/lib/widgets/ephy-location-entry.c
index f89c6d8..b21f656 100644
--- a/lib/widgets/ephy-location-entry.c
+++ b/lib/widgets/ephy-location-entry.c
@@ -30,11 +30,16 @@
 #include "ephy-gui.h"
 #include "ephy-signal-accumulator.h"
 
+#include <libsoup/soup.h>
 #include <gdk/gdkkeysyms.h>
 #include <glib/gi18n.h>
 #include <gtk/gtk.h>
 #include <string.h>
+#ifdef HAVE_WEBKIT2
+#include <webkit2/webkit2.h>
+#else
 #include <webkit/webkit.h>
+#endif
 
 /**
  * SECTION:ephy-location-entry
@@ -941,7 +946,10 @@ static gboolean
 do_dns_prefetch (PrefetchHelper *helper)
 {
 #ifdef HAVE_WEBKIT2
-       /* TODO: Network Features */
+       WebKitWebContext *context = webkit_web_context_get_default ();
+
+       if (helper->uri)
+               webkit_web_context_prefetch_dns (context, helper->uri->host);
 #else
        SoupSession *session = webkit_get_default_session ();