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

chrome/browser/tab_contents/render_view_context_menu.h

Index: chrome/browser/tab_contents/render_view_context_menu.h
diff --git a/chrome/browser/tab_contents/render_view_context_menu.h b/chrome/browser/tab_contents/render_view_context_menu.h
index 24b45135fd19d4def8fb5b5d6aca01d99f0f8e0c..a61104d0238e3a4d864f71fd5a2a35ed4d2eea7e 100644
--- a/chrome/browser/tab_contents/render_view_context_menu.h
+++ b/chrome/browser/tab_contents/render_view_context_menu.h
@@ -73,6 +73,10 @@ struct WebPluginAction;
 //     void Start(const GURL* url, net::URLRequestContextGetter* context) {
 //       fetcher_.reset(new URLFetcher(url, URLFetcher::GET, this));
 //       fetcher_->SetRequestContext(context);
+//       fetcher_->AssociateWithRenderView(
+//           proxy_->GetRenderViewHost()->GetSiteInstance()->GetSite(),
+//           proxy_->GetRenderViewHost()->GetProcess()->GetID(),
+//           proxy_->GetRenderViewHost()->GetRoutingID());
 //       fetcher_->Start();
 //     }
 //