Download shelf autohides on showing in shell, just same as regular open

chrome/browser/platform_util_linux.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/platform_util.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/files/file_util.h"
 #include "base/process/kill.h"
@@ skipping 137 matching lines @@
       // between the time the utility process changes into the directory and the
       // time the application invoked by xdg-open inspects the path by name.
       XDGOpen(path, ".");
       break;
     case SHOW_ITEM_IN_FOLDER:
       ShowFileInNautilus(path.DirName(), path.value());
       break;
   }
 }
 
-}  // namespace internal
-
-void ShowItemInFolder(Profile* profile, const base::FilePath& full_path) {
+void PlatformShowItemInFolder(Profile* profile,
+                              const base::FilePath& full_path) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   base::PostTaskAndReplyWithResult(content::BrowserThread::GetBlockingPool(),
                                    FROM_HERE,
                                    base::Bind(&CheckNautilusIsDefault),
                                    base::Bind(&ShowItem, profile, full_path));
 }
 
+}  // namespace internal
+
 void OpenExternal(Profile* profile, const GURL& url) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   if (url.SchemeIs("mailto"))
     XDGEmail(url.spec());
   else
     XDGOpen(base::FilePath(), url.spec());
 }
 
 }  // namespace platform_util