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

content/browser/download/download_file_impl.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 "content/browser/download/download_file_impl.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/files/file_util.h"
@@ skipping 226 matching lines @@
 }
 
 std::string DownloadFileImpl::GetHashState() {
   return file_.GetHashState();
 }
 
 void DownloadFileImpl::SetClientGuid(const std::string& guid) {
   file_.SetClientGuid(guid);
 }
 
+void DownloadFileImpl::SetHideFileExtension(bool hide_extension) {
+  file_.set_hide_file_extension(hide_extension);
+}
+
 void DownloadFileImpl::StreamActive() {
   base::TimeTicks start(base::TimeTicks::Now());
   base::TimeTicks now;
   scoped_refptr<net::IOBuffer> incoming_data;
   size_t incoming_data_size = 0;
   size_t total_incoming_data_size = 0;
   size_t num_buffers = 0;
   ByteStreamReader::StreamState state(ByteStreamReader::STREAM_EMPTY);
   DownloadInterruptReason reason = DOWNLOAD_INTERRUPT_REASON_NONE;
   base::TimeDelta delta(
@@ skipping 95 matching lines @@
                  observer_, file_.bytes_so_far(), CurrentSpeed(),
                  GetHashState()));
 }
 
 // static
 int DownloadFile::GetNumberOfDownloadFiles() {
   return number_active_objects_;
 }
 
 }  // namespace content