Allow the content browser client to specify a special cookie store to be

net/url_request/url_request_context.h

Index: net/url_request/url_request_context.h
===================================================================
--- net/url_request/url_request_context.h	(revision 255909)
+++ net/url_request/url_request_context.h	(working copy)
@@ -58,9 +58,13 @@
   // May return NULL if this context doesn't have an associated network session.
   const HttpNetworkSession::Params* GetNetworkSessionParams() const;
 
+  // Creates a URLRequest. |cookie_store| optionally specifies a cookie store
+  // to be used rather than the one represented by the context, or NULL
+  // otherwise.
   scoped_ptr<URLRequest> CreateRequest(const GURL& url,
                                        RequestPriority priority,
-                                       URLRequest::Delegate* delegate) const;
+                                       URLRequest::Delegate* delegate,
+                                       CookieStore* cookie_store) const;
 
   NetLog* net_log() const {
     return net_log_;