Disable storing cookies from URLFetchers that run with a profile's cookie jar.

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 d2bf6f1e01fe38540f42ee8a3438687f5b9ee934..8a3d9c3f5c0699abbc23d4ea89b79de8cb116e84 100644
--- a/chrome/browser/alternate_nav_url_fetcher.cc
+++ b/chrome/browser/alternate_nav_url_fetcher.cc
@@ -17,6 +17,7 @@
 #include "content/public/browser/web_contents.h"
 #include "grit/generated_resources.h"
 #include "grit/theme_resources_standard.h"
+#include "net/base/load_flags.h"
 #include "net/base/registry_controlled_domain.h"
 #include "net/url_request/url_request.h"
 #include "ui/base/l10n/l10n_util.h"
@@ -190,6 +191,7 @@ 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);
   fetcher_->Start();
 }