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

chrome/browser/download/download_test_file_activity_observer.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_test_file_activity_observer.h"
 
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/single_thread_task_runner.h"
 #include "base/thread_task_runner_handle.h"
@@ skipping 40 matching lines @@
 
  protected:
   void PromptUserForDownloadPath(
       content::DownloadItem* item,
       const base::FilePath& suggested_path,
       const FileSelectedCallback& callback) override {
     file_chooser_displayed_ = true;
     base::ThreadTaskRunnerHandle::Get()->PostTask(
         FROM_HERE,
         base::Bind(callback, (file_chooser_enabled_ ? suggested_path
-                                                    : base::FilePath())));
+                                                    : base::FilePath()),
+                             false));
   }
 
   void OpenDownload(content::DownloadItem* item) override {}
 
  private:
   bool file_chooser_enabled_;
   bool file_chooser_displayed_;
   base::WeakPtrFactory<MockDownloadManagerDelegate> weak_ptr_factory_;
 };
 
@@ skipping 11 matching lines @@
 
 void DownloadTestFileActivityObserver::EnableFileChooser(bool enable) {
   if (test_delegate_.get())
     test_delegate_->EnableFileChooser(enable);
 }
 
 bool DownloadTestFileActivityObserver::TestAndResetDidShowFileChooser() {
   return test_delegate_.get() &&
       test_delegate_->TestAndResetDidShowFileChooser();
 }