Get frecon working with mustash.

services/ui/public/interfaces/display/display_controller.mojom

 // Copyright 2016 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.
 
 module display.mojom;
 
 import "ui/gfx/geometry/mojo/geometry.mojom";
 
 // An interface for clients that are allowed to make changes to the display 
 // state.
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   // Rotate the current display by 90° CW. The current display is the display
   // closest to the mouse cursor.
   RotateCurrentDisplayCW();
 
   // Swap the primary display and the next display.
   SwapPrimaryDisplay();
 
   // Toggles between mirroring and extended mode.
   ToggleMirrorMode();
 
+  // ============================ Virtual Terminal ============================
+
+  // Take control of all display output. This is called when switching from the
+  // virtual terminal back to Chrome in response to a dbus message.
+  TakeDisplayControl() => (bool status);
+  
+  // Relinquish control of all display output. This is called when switching
+  // from Chrome to the virtual terminal in response to a dbus message.
+  RelinquishDisplayControl() => (bool status);
+
   // ========================= Configuration Changes ==========================
 
   // Sets the display work area with the provided insets. The display size is
   // included to ensure that the insets are for the current display size.
   SetDisplayWorkArea(int64 display_id, 
                      gfx.mojom.Size size,
                      gfx.mojom.Insets insets);
 
   // TODO(kylechar): This interface will need to be expanded to provide
   // additional functionality for the display settings page and other ash
   // keyboard accelerators.
 };