Query the network delegate for cookies even if there is no cookie monster

On iOS, there is a platform specific implementation of the cookie store which is not a CookieMonster.
However, the network delegate is currently only called if the cookie store is a CookieMonster, and thus cookie settings are bypassed.
This CL calls the network delegate even if the cookie store is not a CookieMonster.

BUG=145954

Review URL: https://chromiumcodereview.appspot.com/11417148

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@170942 0039d316-1c4b-4281-b951-d872f2087c98

net/url_request/url_request.h

@@ -731,10 +731,14 @@ class NET_EXPORT URLRequest : NON_EXPORTED_BASE(public base::NonThreadSafe),
   void NotifyAuthRequiredComplete(NetworkDelegate::AuthRequiredResponse result);
   void NotifyCertificateRequested(SSLCertRequestInfo* cert_request_info);
   void NotifySSLCertificateError(const SSLInfo& ssl_info, bool fatal);
+  void NotifyReadCompleted(int bytes_read);
+
+  // These functions delegate to |network_delegate_| if it is not NULL.
+  // If |network_delegate_| is NULL, cookies can be used unless
+  // SetDefaultCookiePolicyToBlock() has been called.
   bool CanGetCookies(const CookieList& cookie_list) const;
   bool CanSetCookie(const std::string& cookie_line,
                     CookieOptions* options) const;
-  void NotifyReadCompleted(int bytes_read);
 
   // Called when the delegate blocks or unblocks this request when intercepting
   // certain requests.

net/url_request/url_request_http_job.cc

@@ -518,7 +518,7 @@ void URLRequestHttpJob::AddCookieHeaderAndStart() {
           base::Bind(&URLRequestHttpJob::CheckCookiePolicyAndLoad,
                      weak_factory_.GetWeakPtr()));
     } else {
-      DoLoadCookies();
+      CheckCookiePolicyAndLoad(CookieList());
     }
   } else {
     DoStartTransaction();