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      1 // Copyright 2014 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "base/command_line.h"
      6 #include "ui/native_theme/native_theme_switches.h"
      7 
      8 namespace switches {
      9 
     10 // Enables overlay scrollbars on Aura or Linux. Does nothing on Mac.
     11 const char kEnableOverlayScrollbar[] = "enable-overlay-scrollbar";
     12 
     13 // Disables overlay scrollbars on Aura or Linux. Does nothing on Mac.
     14 const char kDisableOverlayScrollbar[] = "disable-overlay-scrollbar";
     15 
     16 }  // namespace switches
     17 
     18 namespace ui {
     19 
     20 bool IsOverlayScrollbarEnabled() {
     21   const CommandLine& command_line = *CommandLine::ForCurrentProcess();
     22 
     23   if (command_line.HasSwitch(switches::kDisableOverlayScrollbar))
     24     return false;
     25   else if (command_line.HasSwitch(switches::kEnableOverlayScrollbar))
     26     return true;
     27 
     28   return false;
     29 }
     30 
     31 }  // namespace ui
     32