Add a "Show File" button to chrome://net-export/

components/net_log/net_export_ui_constants.cc

 // Copyright 2015 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 "components/net_log/net_export_ui_constants.h"
 
 namespace net_log {
 
 // Resource paths.
 const char kNetExportUIJS[] = "net_export.js";
 
 // Message handlers.
 const char kEnableNotifyUIWithStateHandler[] = "enableNotifyUIWithState";
 const char kSendNetLogHandler[] = "sendNetLog";
+const char kShowFile[] = "showFile";
 const char kStartNetLogHandler[] = "startNetLog";
 const char kStopNetLogHandler[] = "stopNetLog";
 
 // Other values.
 const char kOnExportNetLogInfoChanged[] =
     "NetExportView.getInstance().onExportNetLogInfoChanged";
 
 }  // namespace net_log