|  | // Copyright 2014 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 "base/command_line.h" | 
|  | #include "ui/native_theme/native_theme_switches.h" | 
|  |  | 
|  | namespace switches { | 
|  |  | 
|  | // Enables overlay scrollbars on Aura or Linux. Does nothing on Mac. | 
|  | const char kEnableOverlayScrollbar[] = "enable-overlay-scrollbar"; | 
|  |  | 
|  | // Disables overlay scrollbars on Aura or Linux. Does nothing on Mac. | 
|  | const char kDisableOverlayScrollbar[] = "disable-overlay-scrollbar"; | 
|  |  | 
|  | }  // namespace switches | 
|  |  | 
|  | namespace ui { | 
|  |  | 
|  | bool IsOverlayScrollbarEnabled() { | 
|  | const CommandLine& command_line = *CommandLine::ForCurrentProcess(); | 
|  |  | 
|  | if (command_line.HasSwitch(switches::kDisableOverlayScrollbar)) | 
|  | return false; | 
|  | else if (command_line.HasSwitch(switches::kEnableOverlayScrollbar)) | 
|  | return true; | 
|  |  | 
|  | return false; | 
|  | } | 
|  |  | 
|  | }  // namespace ui |