[Downloads] Always call DM::StartDownload() for explicit downloads.

content/browser/download/download_create_info.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_BROWSER_DOWNLOAD_DOWNLOAD_CREATE_INFO_H_
 #define CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_CREATE_INFO_H_
 
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/files/file_path.h"
 #include "base/time/time.h"
 #include "content/browser/download/download_file.h"
 #include "content/browser/download/download_request_handle.h"
 #include "content/common/content_export.h"
+#include "content/public/browser/download_interrupt_reasons.h"
 #include "content/public/browser/download_save_info.h"
 #include "content/public/common/page_transition_types.h"
 #include "net/base/net_log.h"
 #include "url/gurl.h"
 
 namespace content {
 
 // Used for informing the download manager of a new download, since we don't
 // want to pass |DownloadItem|s between threads.
 struct CONTENT_EXPORT DownloadCreateInfo {
@@ skipping 54 matching lines @@
   // The download file save info.
   scoped_ptr<DownloadSaveInfo> save_info;
 
   // The remote IP address where the download was fetched from.  Copied from
   // UrlRequest::GetSocketAddress().
   std::string remote_address;
 
   // The handle to the URLRequest sourcing this download.
   DownloadRequestHandle request_handle;
 
+  // Contains the download interrupt reason if the download started in a failed
+  // state. Otherwise contains DOWNLOAD_INTERRUPT_REASON_NONE.
+  DownloadInterruptReason interrupt_reason;
+
   // The request's |BoundNetLog|, for "source_dependency" linking with the
   // download item's.
   const net::BoundNetLog request_bound_net_log;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(DownloadCreateInfo);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_CREATE_INFO_H_