Replace void* with int32 for passing download_id to SelectFileDialog::Listener.

chrome/browser/download/download_file_picker.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 CHROME_BROWSER_DOWNLOAD_DOWNLOAD_FILE_PICKER_H_
 #define CHROME_BROWSER_DOWNLOAD_DOWNLOAD_FILE_PICKER_H_
 #pragma once
 
 #include "chrome/browser/ui/select_file_dialog.h"
 #include "content/public/browser/download_manager.h"
 
 class FilePath;
 
 namespace content {
 class WebContents;
 }
 
 // Handles showing a dialog to the user to ask for the filename for a download.
 class DownloadFilePicker : public content::DownloadManager::Observer,
                            public SelectFileDialog::Listener {
  public:
   DownloadFilePicker(content::DownloadManager* download_manager,
                      content::WebContents* web_contents,
                      const FilePath& suggested_path,
-                     void* params);
+                     int32 download_id);
   virtual ~DownloadFilePicker();
 
  private:
   // content::DownloadManager::Observer implementation.
   virtual void ModelChanged(content::DownloadManager* manager) OVERRIDE;
   virtual void ManagerGoingDown(content::DownloadManager* manager) OVERRIDE;
 
   // SelectFileDialog::Listener implementation.
   virtual void FileSelected(const FilePath& path,
                             int index,
                             void* params) OVERRIDE;
   virtual void FileSelectionCanceled(void* params) OVERRIDE;
 
   content::DownloadManager* download_manager_;
+  int32 download_id_;
 
   FilePath suggested_path_;
 
   // For managing select file dialogs.
   scoped_refptr<SelectFileDialog> select_file_dialog_;
 
   DISALLOW_COPY_AND_ASSIGN(DownloadFilePicker);
 };
 
 #endif  // CHROME_BROWSER_DOWNLOAD_DOWNLOAD_FILE_PICKER_H_