Unified Desktop: Support 2xDSF display

ash/accelerators/accelerator_commands.h

 // Copyright 2013 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 ASH_ACCELERATORS_ACCELERATOR_COMMANDS_H_
 #define ASH_ACCELERATORS_ACCELERATOR_COMMANDS_H_
 
 #include "ash/ash_export.h"
 
 // This file contains implementations of commands that are bound to keyboard
@@ skipping 10 matching lines @@
 // fullscreen mode.
 ASH_EXPORT void ToggleMaximized();
 
 // Toggles the fullscreen state. The behavior can be overridden
 // by WindowStateDelegate::ToggleFullscreen().
 ASH_EXPORT void ToggleFullscreen();
 
 // Toggles touch HUD.
 ASH_EXPORT void ToggleTouchHudProjection();
 
+// True if the desktop zoom accelerator is enabled.
+bool IsInternalDisplayZoomEnabled();
+
+// Change internal display zooming up or down.
+ASH_EXPORT bool ZoomInternalDisplay(bool up);
+
+// Reset the display zooming to the default state.
+ASH_EXPORT void ResetInternalDisplayZoom();
+
 }  // namespace accelerators
 }  // namespace ash
 
 #endif  // ASH_ACCELERATORS_ACCELERATOR_COMMANDS_H_