Make the download's response headers available in the DownloadItem

content/public/browser/download_item.h

Index: content/public/browser/download_item.h
diff --git a/content/public/browser/download_item.h b/content/public/browser/download_item.h
index 0b712396e339b27be422f4dc5891d66036bc72f7..34a4c6c7ff744c231858b0c79e80e44a1bca7ec3 100644
--- a/content/public/browser/download_item.h
+++ b/content/public/browser/download_item.h
@@ -245,6 +245,10 @@ class CONTENT_EXPORT DownloadItem : public base::SupportsUserData {
   // filename from the download attribute.
   virtual std::string GetSuggestedFilename() const = 0;
 
+  // Returns the HTTP response code. This is 0 when the response has not yet
+  // been received or if the response code text could not be parsed.
+  virtual int GetResponseCode() const = 0;
+
   // Content-Disposition header value from HTTP response.
   virtual std::string GetContentDisposition() const = 0;