Use the suggested name from an anchor's 'download' attribute.

chrome/browser/download/download_util.h

 // Copyright (c) 2011 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.
 //
 // Download utilities.
 
 #ifndef CHROME_BROWSER_DOWNLOAD_DOWNLOAD_UTIL_H_
 #define CHROME_BROWSER_DOWNLOAD_DOWNLOAD_UTIL_H_
 #pragma once
 
@@ skipping 48 matching lines @@
 
 // Return true if the |download_path| is dangerous path.
 bool DownloadPathIsDangerous(const FilePath& download_path);
 
 // Create an extension based on the file name and mime type.
 void GenerateExtension(const FilePath& file_name,
                        const std::string& mime_type,
                        FilePath::StringType* generated_extension);
 
 // Create a file name based on the response from the server.
-void GenerateFileNameFromRequest(const GURL& url,
-                                 const std::string& content_disposition,
-                                 const std::string& referrer_charset,
-                                 const std::string& mime_type,
+void GenerateFileNameFromRequest(const DownloadItem& download_item,
                                  FilePath* generated_name);
 
 void GenerateFileNameFromSuggestedName(const GURL& url,
                                        const std::string& suggested_name,
                                        const std::string& mime_type,
                                        FilePath* generated_name);
 
 void GenerateFileName(const GURL& url,
                       const std::string& content_disposition,
                       const std::string& referrer_charset,
@@ skipping 190 matching lines @@
 // Erases all downloaded files with the specified path and name prefix.
 // Used by download UI tests to clean up the download directory.
 void EraseUniqueDownloadFiles(const FilePath& path_prefix);
 
 // Returns a .crdownload intermediate path for the |suggested_path|.
 FilePath GetCrDownloadPath(const FilePath& suggested_path);
 
 }  // namespace download_util
 
 #endif  // CHROME_BROWSER_DOWNLOAD_DOWNLOAD_UTIL_H_