Implement High Contrast mode for Chrome OS

chrome/browser/ui/views/ash/chrome_shell_delegate.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_VIEWS_ASH_CHROME_SHELL_DELEGATE_H_
 #define CHROME_BROWSER_UI_VIEWS_ASH_CHROME_SHELL_DELEGATE_H_
 #pragma once
 
 #include "ash/launcher/launcher_types.h"
 #include "ash/shell_delegate.h"
@@ skipping 27 matching lines @@
   virtual void Shutdown() OVERRIDE;
   virtual void Exit() OVERRIDE;
   virtual void NewWindow(bool is_incognito) OVERRIDE;
   virtual void Search() OVERRIDE;
   virtual void OpenFileManager() OVERRIDE;
   virtual void OpenCrosh() OVERRIDE;
   virtual void OpenMobileSetup() OVERRIDE;
   virtual void ShowKeyboardOverlay(ui::AcceleratorTarget* target) OVERRIDE;
   virtual content::BrowserContext* GetCurrentBrowserContext() OVERRIDE;
   virtual void ToggleSpokenFeedback() OVERRIDE;
+  virtual bool IsHighContrastEnabled() OVERRIDE;
   virtual app_list::AppListViewDelegate* CreateAppListViewDelegate() OVERRIDE;
   virtual void StartPartialScreenshot(
       ash::ScreenshotDelegate* screenshot_delegate) OVERRIDE;
   virtual ash::LauncherDelegate* CreateLauncherDelegate(
       ash::LauncherModel* model) OVERRIDE;
   virtual ash::SystemTrayDelegate* CreateSystemTrayDelegate(
       ash::SystemTray* tray) OVERRIDE;
   virtual ash::UserWallpaperDelegate* CreateUserWallpaperDelegate() OVERRIDE;
 
   // content::NotificationObserver override:
   virtual void Observe(int type,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
 
  private:
   static ChromeShellDelegate* instance_;
 
   content::NotificationRegistrar registrar_;
 
   scoped_ptr<WindowPositioner> window_positioner_;
 
   base::WeakPtrFactory<ChromeShellDelegate> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeShellDelegate);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_ASH_CHROME_SHELL_DELEGATE_H_