Add HTTP status code to navigation data structures

content/public/browser/navigation_entry.h

Index: content/public/browser/navigation_entry.h
diff --git a/content/public/browser/navigation_entry.h b/content/public/browser/navigation_entry.h
index e7724ebd7a7c20491c87cdaa76af27428995380a..faeecc7c640142310316c4b21532c38c89691e1e 100644
--- a/content/public/browser/navigation_entry.h
+++ b/content/public/browser/navigation_entry.h
@@ -198,6 +198,16 @@ class NavigationEntry {
   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