[Mac] DownloadShelf should be notified when autoclosing.

chrome/browser/download/download_shelf.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_shelf.h"
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/message_loop.h"
 #include "chrome/browser/download/download_item_model.h"
@@ skipping 45 matching lines @@
 }
 
 void DownloadShelf::Show() {
   if (is_hidden_) {
     should_show_on_unhide_ = true;
     return;
   }
   DoShow();
 }
 
-void DownloadShelf::Close() {
+void DownloadShelf::Close(CloseReason reason) {
   if (is_hidden_) {
     should_show_on_unhide_ = false;
     return;
   }
-  DoClose();
+  DoClose(reason);
 }
 
 void DownloadShelf::Hide() {
   if (is_hidden_)
     return;
   is_hidden_ = true;
   if (IsShowing()) {
     should_show_on_unhide_ = true;
-    DoClose();
+    DoClose(AUTOMATIC);
   }
 }
 
 void DownloadShelf::Unhide() {
   if (!is_hidden_)
     return;
   is_hidden_ = false;
   if (should_show_on_unhide_) {
     should_show_on_unhide_ = false;
     DoShow();
@@ skipping 44 matching lines @@
   content::DownloadManager* download_manager = GetDownloadManager();
   if (!download_manager)
     return;
 
   DownloadItem* download = download_manager->GetDownload(download_id);
   if (!download)
     return;
 
   ShowDownload(download);
 }