Enable "Hide Extension" option when "Save Link As" on the Mac

chrome/browser/download/download_file_picker.cc

 // 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.
 
 #include "chrome/browser/download/download_file_picker.h"
 
 #include "base/metrics/histogram.h"
 #include "chrome/browser/download/download_prefs.h"
 #include "chrome/browser/platform_util.h"
 #include "chrome/browser/ui/chrome_select_file_policy.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/download_item.h"
 #include "content/public/browser/download_manager.h"
 #include "content/public/browser/web_contents.h"
+#include "ui/shell_dialogs/selected_file_info.h"
 
 using content::DownloadItem;
 using content::DownloadManager;
 using content::WebContents;
 
 namespace {
 
 enum FilePickerResult {
   FILE_PICKER_SAME,
   FILE_PICKER_DIFFERENT_DIR,
@@ skipping 60 matching lines @@
                                   &file_type_info,
                                   0,
                                   base::FilePath::StringType(),
                                   owning_window,
                                   NULL);
 }
 
 DownloadFilePicker::~DownloadFilePicker() {
 }
 
-void DownloadFilePicker::OnFileSelected(const base::FilePath& path) {
+void DownloadFilePicker::OnFileSelected(const base::FilePath& path,
+                                        bool hide_file_extension) {
   if (should_record_file_picker_result_)
     RecordFilePickerResult(suggested_path_, path);
-  file_selected_callback_.Run(path);
+  file_selected_callback_.Run(path, hide_file_extension);
   delete this;
 }
 
 void DownloadFilePicker::FileSelected(const base::FilePath& path,
                                       int index,
                                       void* params) {
-  OnFileSelected(path);
+  OnFileSelected(path, false);
   // Deletes |this|
 }
 
+void DownloadFilePicker::FileSelectedWithExtraInfo(
+    const ui::SelectedFileInfo& file,
+    int index,
+    void* params) {
+  OnFileSelected(file.local_path.empty() ? file.file_path : file.local_path,
+                 file.hide_file_extension);
+}
+
 void DownloadFilePicker::FileSelectionCanceled(void* params) {
-  OnFileSelected(base::FilePath());
+  OnFileSelected(base::FilePath(), false);
   // Deletes |this|
 }
 
 // static
 void DownloadFilePicker::ShowFilePicker(DownloadItem* item,
                                         const base::FilePath& suggested_path,
                                         const FileSelectedCallback& callback) {
   new DownloadFilePicker(item, suggested_path, callback);
   // DownloadFilePicker deletes itself.
 }