Add HTTP status code to navigation data structures

content/public/browser/navigation_entry.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 CONTENT_PUBLIC_BROWSER_NAVIGATION_ENTRY_H_
 #define CONTENT_PUBLIC_BROWSER_NAVIGATION_ENTRY_H_
 
 #include <string>
 
 #include "base/memory/ref_counted_memory.h"
@@ skipping 180 matching lines @@
   virtual void SetFrameToNavigate(const std::string& frame_name) = 0;
   virtual const std::string& GetFrameToNavigate() const = 0;
 
   // Set extra data on this NavigationEntry according to the specified |key|.
   // This data is not persisted by default.
   virtual void SetExtraData(const std::string& key, const string16& data) = 0;
   // If present, fills the |data| present at the specified |key|.
   virtual bool GetExtraData(const std::string& key, string16* data) const = 0;
   // Removes the data at the specified |key|.
   virtual void ClearExtraData(const std::string& key) = 0;
+
+  // The status code of the last known successful navigation.  If
+  // GetHttpStatusCode() returns 0 that means that either:
+  //
+  //   - this navigation hasn't completed yet;
+  //   - a response wasn't received;
+  //   - or this navigation was restored and for some reason the
+  //     status code wasn't available.
+  virtual void SetHttpStatusCode(int http_status_code) = 0;
+  virtual int GetHttpStatusCode() const = 0;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_NAVIGATION_ENTRY_H_