Add <link rel=next> support to prerender.

chrome/renderer/prerender/prerender_dispatcher.cc

Index: chrome/renderer/prerender/prerender_dispatcher.cc
diff --git a/chrome/renderer/prerender/prerender_dispatcher.cc b/chrome/renderer/prerender/prerender_dispatcher.cc
index a787a701982fc922c6d9c07bace611e40ada1a17..31e23cfff9bb3f4df660aac26768a2bab8b1f7ed 100644
--- a/chrome/renderer/prerender/prerender_dispatcher.cc
+++ b/chrome/renderer/prerender/prerender_dispatcher.cc
@@ -6,6 +6,7 @@
 
 #include "base/logging.h"
 #include "chrome/common/prerender_messages.h"
+#include "chrome/common/prerender_types.h"
 #include "chrome/renderer/prerender/prerender_extra_data.h"
 #include "content/public/common/referrer.h"
 #include "content/public/renderer/render_thread.h"
@@ -117,8 +118,12 @@ void PrerenderDispatcher::add(const WebPrerender& prerender) {
 
   prerenders_[extra_data.prerender_id()] = prerender;
 
+  PrerenderAttributes attributes;
+  attributes.url = GURL(prerender.url());
+  attributes.rel_types = prerender.relTypes();
+
   content::RenderThread::Get()->Send(new PrerenderHostMsg_AddLinkRelPrerender(
-      extra_data.prerender_id(), GURL(prerender.url()),
+      extra_data.prerender_id(), attributes,
       content::Referrer(GURL(prerender.referrer()),
                         prerender.referrerPolicy()),
       extra_data.size(), extra_data.render_view_route_id()));