Option-click to download should not display "Save As" UI.

chrome/browser/history/download_types.h

 // Copyright (c) 2006-2008 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 creation struct used for querying the history service.
 
 #ifndef CHROME_BROWSER_HISTORY_DOWNLOAD_TYPES_H_
 #define CHROME_BROWSER_HISTORY_DOWNLOAD_TYPES_H_
 
 #include <string>
@@ skipping 21 matching lines @@
         path_uniquifier(0),
         start_time(start_time),
         received_bytes(received_bytes),
         total_bytes(total_bytes),
         state(state),
         download_id(download_id),
         child_id(-1),
         render_view_id(-1),
         request_id(-1),
         db_handle(0),
-        save_as(false),
+        prompt_user_for_save_location(false),
         is_dangerous(false),
         is_extension_install(false) {
   }
 
   DownloadCreateInfo()
       : path_uniquifier(0),
         received_bytes(0),
         total_bytes(0),
         state(-1),
         download_id(-1),
         child_id(-1),
         render_view_id(-1),
         request_id(-1),
         db_handle(0),
-        save_as(false),
+        prompt_user_for_save_location(false),
         is_dangerous(false),
         is_extension_install(false) {
   }
 
   // DownloadItem fields
   FilePath path;
   GURL url;
   GURL referrer_url;
   FilePath suggested_path;
   // A number that should be added to the suggested path to make it unique.
   // 0 means no number should be appended.  Not actually stored in the db.
   int path_uniquifier;
   base::Time start_time;
   int64 received_bytes;
   int64 total_bytes;
   int32 state;
   int32 download_id;
   int child_id;
   int render_view_id;
   int request_id;
   int64 db_handle;
   std::string content_disposition;
   std::string mime_type;
   // The value of the content type header sent with the downloaded item.  It
   // may be different from |mime_type|, which may be set based on heuristics
   // which may look at the file extension and first few bytes of the file.
   std::string original_mime_type;
-  bool save_as;
+
+  // True if we should display the 'save as...' UI and prompt the user
+  // for the download location.
+  // False if the UI should be supressed and the download performed to the
+  // default location.
+  bool prompt_user_for_save_location;
   // Whether this download is potentially dangerous (ex: exe, dll, ...).
   bool is_dangerous;
   // The original name for a dangerous download.
   FilePath original_name;
   // Whether this download is for extension install or not.
   bool is_extension_install;
   // The charset of the referring page where the download request comes from.
   // It's used to construct a suggested filename.
   std::string referrer_charset;
   // The download file save info.
   DownloadSaveInfo save_info;
 };
 
 #endif  // CHROME_BROWSER_HISTORY_DOWNLOAD_TYPES_H_