Make the download's response headers available in the DownloadItem

content/public/browser/download_item.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.
 //
 // Each download is represented by a DownloadItem, and all DownloadItems
 // are owned by the DownloadManager which maintains a global list of all
 // downloads. DownloadItems are created when a user initiates a download,
 // and exist for the duration of the browser life time.
 //
 // Download observers:
 //   DownloadItem::Observer:
 //     - allows observers to receive notifications about one download from start
 //       to completion
 // Use AddObserver() / RemoveObserver() on the appropriate download object to
 // receive state updates.
 
 #ifndef CONTENT_PUBLIC_BROWSER_DOWNLOAD_ITEM_H_
 #define CONTENT_PUBLIC_BROWSER_DOWNLOAD_ITEM_H_
 
 #include <stdint.h>
 
 #include <map>
 #include <string>
 #include <vector>
 
 #include "base/callback_forward.h"
 #include "base/files/file_path.h"
+#include "base/memory/ref_counted.h"
 #include "base/strings/string16.h"
 #include "base/supports_user_data.h"
 #include "content/public/browser/download_danger_type.h"
 #include "content/public/browser/download_interrupt_reasons.h"
 #include "ui/base/page_transition_types.h"
 
 class GURL;
 
 namespace base {
 class FilePath;
 class Time;
 class TimeDelta;
 }
 
+namespace net {
+class HttpResponseHeaders;
+}
+
 namespace content {
 
 class BrowserContext;
 class DownloadManager;
 class WebContents;
 
 // One DownloadItem per download. This is the model class that stores all the
 // state for a download. Multiple views, such as a tab's download shelf and the
 // Destination tab's download view, may refer to a given DownloadItem.
 //
@@ skipping 186 matching lines @@
   // URL of the top level frame at the time the download was initiated.
   virtual const GURL& GetTabUrl() const = 0;
 
   // Referrer URL for top level frame.
   virtual const GURL& GetTabReferrerUrl() const = 0;
 
   // For downloads initiated via <a download>, this is the suggested download
   // filename from the download attribute.
   virtual std::string GetSuggestedFilename() const = 0;
 
+  // Returns the HTTP response headers. This contains a nullptr when the
+  // response has not yet been received, and, because the headers are not being
+  // persisted, only capture responses received during the lifetime of the
+  // current process and profile. Only for consuming headers.
+  virtual const scoped_refptr<const net::HttpResponseHeaders>&
+  GetResponseHeaders() const = 0;
+
   // Content-Disposition header value from HTTP response.
   virtual std::string GetContentDisposition() const = 0;
 
   // Effective MIME type of downloaded content.
   virtual std::string GetMimeType() const = 0;
 
   // Content-Type header value from HTTP response. May be different from
   // GetMimeType() if a different effective MIME type was chosen after MIME
   // sniffing.
   virtual std::string GetOriginalMimeType() const = 0;
@@ skipping 182 matching lines @@
   // return |name|. Has no effect on the final target filename.
   virtual void SetDisplayName(const base::FilePath& name) = 0;
 
   // Debug/testing -------------------------------------------------------------
   virtual std::string DebugString(bool verbose) const = 0;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_DOWNLOAD_ITEM_H_