Allows deferral of a URLRequest just before talking to the network, at

net/url_request/url_request_job.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef NET_URL_REQUEST_URL_REQUEST_JOB_H_
 #define NET_URL_REQUEST_URL_REQUEST_JOB_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 161 matching lines @@
   virtual void SetAuth(const AuthCredentials& credentials);
 
   // Display the error page without asking for credentials again.
   virtual void CancelAuth();
 
   virtual void ContinueWithCertificate(X509Certificate* client_cert);
 
   // Continue processing the request ignoring the last error.
   virtual void ContinueDespiteLastError();
 
+  // Continue with the network request.
+  virtual void ResumeNetworkStart();
+
   void FollowDeferredRedirect();
 
   // Returns true if the Job is done producing response data and has called
   // NotifyDone on the request.
   bool is_done() const { return done_; }
 
   // Get/Set expected content size
   int64 expected_content_size() const { return expected_content_size_; }
   void set_expected_content_size(const int64& size) {
     expected_content_size_ = size;
@@ skipping 33 matching lines @@
   // Delegates to URLRequest::Delegate.
   bool CanGetCookies(const CookieList& cookie_list) const;
 
   // Delegates to URLRequest::Delegate.
   bool CanSetCookie(const std::string& cookie_line,
                     CookieOptions* options) const;
 
   // Delegates to URLRequest::Delegate.
   bool CanEnablePrivacyMode() const;
 
+  // Notifies the job that the network is about to be used.
+  void NotifyBeforeNetworkStart(bool* defer);
+
   // Notifies the job that headers have been received.
   void NotifyHeadersComplete();
 
   // Notifies the request that the job has completed a Read operation.
   void NotifyReadComplete(int bytes_read);
 
   // Notifies the request that a start error has occurred.
   void NotifyStartError(const URLRequestStatus& status);
 
   // NotifyDone marks when we are done with a request.  It is really
   // a glorified set_status, but also does internal state checking and
   // job tracking.  It should be called once per request, when the job is
   // finished doing all IO.
   void NotifyDone(const URLRequestStatus& status);
 
   // Some work performed by NotifyDone must be completed on a separate task
   // so as to avoid re-entering the delegate.  This method exists to perform
   // that work.
   void CompleteNotifyDone();
 
   // Used as an asynchronous callback for Kill to notify the URLRequest
   // that we were canceled.
   void NotifyCanceled();
 
   // Notifies the job the request should be restarted.
-  // Should only be called if the job has not started a resposne.
+  // Should only be called if the job has not started a response.
   void NotifyRestartRequired();
 
   // See corresponding functions in url_request.h.
   void OnCallToDelegate();
   void OnCallToDelegateComplete();
 
   // Called to read raw (pre-filtered) data from this Job.
   // If returning true, data was read from the job.  buf will contain
   // the data, and bytes_read will receive the number of bytes read.
   // If returning true, and bytes_read is returned as 0, there is no
@@ skipping 127 matching lines @@
   NetworkDelegate* network_delegate_;
 
   base::WeakPtrFactory<URLRequestJob> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(URLRequestJob);
 };
 
 }  // namespace net
 
 #endif  // NET_URL_REQUEST_URL_REQUEST_JOB_H_