Do cookie checks in NetworkDelegate instead of the URLRequest::Delegate.

chrome/browser/alternate_nav_url_fetcher.cc

Index: chrome/browser/alternate_nav_url_fetcher.cc
diff --git a/chrome/browser/alternate_nav_url_fetcher.cc b/chrome/browser/alternate_nav_url_fetcher.cc
index 08b12f6252eb1e8cea1a3755032e71a9896f9523..49e1ee0f1f3c24ff2fc13808c6e352b9b78737d6 100644
--- a/chrome/browser/alternate_nav_url_fetcher.cc
+++ b/chrome/browser/alternate_nav_url_fetcher.cc
@@ -11,9 +11,12 @@
 #include "chrome/browser/tab_contents/link_infobar_delegate.h"
 #include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
 #include "chrome/common/chrome_notification_types.h"
+#include "content/browser/renderer_host/render_view_host.h"
 #include "content/public/browser/navigation_controller.h"
 #include "content/public/browser/notification_service.h"
+#include "content/public/common/content_url_request_user_data.h"
 #include "content/public/common/url_fetcher.h"
+#include "content/public/browser/render_process_host.h"
 #include "content/public/browser/web_contents.h"
 #include "grit/generated_resources.h"
 #include "grit/theme_resources_standard.h"
@@ -191,7 +194,12 @@ void AlternateNavURLFetcher::StartFetch(NavigationController* controller) {
       GURL(alternate_nav_url_), content::URLFetcher::HEAD, this));
   fetcher_->SetRequestContext(
       controller_->GetBrowserContext()->GetRequestContext());
-  fetcher_->SetLoadFlags(net::LOAD_DO_NOT_SAVE_COOKIES);
+
+  content::WebContents* web_contents = controller_->GetWebContents();
+  fetcher_->SetContentURLRequestUserData(
+      new content::ContentURLRequestUserData(
+          web_contents->GetRenderProcessHost()->GetID(),
+          web_contents->GetRenderViewHost()->routing_id()));
   fetcher_->Start();
 }