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

content/browser/download/download_file_impl.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.
 
 #ifndef CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_FILE_IMPL_H_
 #define CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_FILE_IMPL_H_
 
 #include "content/browser/download/download_file.h"
 
 #include "base/memory/ref_counted.h"
@@ skipping 42 matching lines @@
   void RenameAndAnnotate(const base::FilePath& full_path,
                          const RenameCompletionCallback& callback) override;
   void Detach() override;
   void Cancel() override;
   base::FilePath FullPath() const override;
   bool InProgress() const override;
   int64 CurrentSpeed() const override;
   bool GetHash(std::string* hash) override;
   std::string GetHashState() override;
   void SetClientGuid(const std::string& guid) override;
+  void SetHideFileExtension(bool hide_extension) override;
 
  protected:
   // For test class overrides.
   virtual DownloadInterruptReason AppendDataToFile(
       const char* data, size_t data_len);
 
   virtual base::TimeDelta GetRetryDelayForFailedRename(int attempt_number);
 
   virtual bool ShouldRetryFailedRename(DownloadInterruptReason reason);
 
@@ skipping 56 matching lines @@
   base::WeakPtr<DownloadDestinationObserver> observer_;
 
   base::WeakPtrFactory<DownloadFileImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(DownloadFileImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_FILE_IMPL_H_