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

content/public/browser/download_manager.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.
 //
 // The DownloadManager object manages the process of downloading, including
 // updates to the history system and providing the information for displaying
 // the downloads view in the Destinations tab. There is one DownloadManager per
 // active browser context in Chrome.
 //
 // Download observers:
@@ skipping 208 matching lines @@
   virtual DownloadItem* CreateSavePackageDownloadItem(
       const FilePath& main_file_path,
       const GURL& page_url,
       bool is_otr,
       DownloadItem::Observer* observer) = 0;
 
   // Clears the last download path, used to initialize "save as" dialogs.
   virtual void ClearLastDownloadPath() = 0;
 
   // Called by the delegate after the save as dialog is closed.
-  virtual void FileSelected(const FilePath& path, void* params) = 0;
-  virtual void FileSelectionCanceled(void* params) = 0;
+  virtual void FileSelected(const FilePath& path, int32 download_id) = 0;
+  virtual void FileSelectionCanceled(int32 download_id) = 0;
 
   // Called by the delegate if it delayed the download in
   // DownloadManagerDelegate::ShouldStartDownload and now is ready.
   virtual void RestartDownload(int32 download_id) = 0;
 
   // Checks whether downloaded files still exist. Updates state of downloads
   // that refer to removed files. The check runs in the background and may
   // finish asynchronously after this method returns.
   virtual void CheckForHistoryFilesRemoval() = 0;
 
@@ skipping 39 matching lines @@
   friend class base::RefCountedThreadSafe<
       DownloadManager, content::BrowserThread::DeleteOnUIThread>;
   friend struct content::BrowserThread::DeleteOnThread<
       content::BrowserThread::UI>;
   friend class base::DeleteHelper<DownloadManager>;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_DOWNLOAD_MANAGER_H_