Support transition between chrome and user mode console

ui/display/chromeos/display_configurator.h

Index: ui/display/chromeos/display_configurator.h
diff --git a/ui/display/chromeos/display_configurator.h b/ui/display/chromeos/display_configurator.h
index f4b10d0904ef92503900df84e4b489193e162be2..dc600374d0c0dc625ad640a749647f2afc3aae5b 100644
--- a/ui/display/chromeos/display_configurator.h
+++ b/ui/display/chromeos/display_configurator.h
@@ -145,6 +145,8 @@ class DISPLAY_EXPORT DisplayConfigurator : public NativeDisplayObserver {
     return cached_displays_;
   }
 
+  void RelinquishControl();
+
   void set_state_controller(StateController* controller) {
     state_controller_ = controller;
   }
@@ -312,6 +314,10 @@ class DISPLAY_EXPORT DisplayConfigurator : public NativeDisplayObserver {
   SoftwareMirroringController* mirroring_controller_;
   scoped_ptr<NativeDisplayDelegate> native_display_delegate_;
 
+  // True when the display is controlled by an entity outside
+  // of chrome (ie frecon).
+  bool display_externally_controlled_;
+
   // Used to enable modes which rely on panel fitting.
   bool is_panel_fitting_enabled_;