Support transition between chrome and user mode console

ui/display/chromeos/display_configurator.cc

Index: ui/display/chromeos/display_configurator.cc
diff --git a/ui/display/chromeos/display_configurator.cc b/ui/display/chromeos/display_configurator.cc
index 8d0a24106f6566b4eb493444d67e37ea3246b19d..f2637aaeec4078ea321912bb335d7dd02d47e70e 100644
--- a/ui/display/chromeos/display_configurator.cc
+++ b/ui/display/chromeos/display_configurator.cc
@@ -201,6 +201,14 @@ void DisplayConfigurator::Init(bool is_panel_fitting_enabled) {
   }
 }
 
+void DisplayConfigurator::TakeControl() {
+  NOTIMPLEMENTED();
+}
+
+void DisplayConfigurator::RelinquishControl() {
+  NOTIMPLEMENTED();
+}
+
 void DisplayConfigurator::ForceInitialConfigure(
     uint32_t background_color_argb) {
   if (!configure_display_)