Remove synchronous GetDisplays() and Configure() from NativeDisplayDelegate

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 01f47fabb038179be68ec56719d92d215caafb95..97d82e5c199940a926e40c607be7b3932a0474f2 100644
--- a/ui/display/chromeos/display_configurator.cc
+++ b/ui/display/chromeos/display_configurator.cc
@@ -500,12 +500,8 @@ void DisplayConfigurator::TakeControl() {
     return;
 
   display_externally_controlled_ = false;
-
-  for (DisplayStateList::const_iterator it = cached_displays_.begin();
-       it != cached_displays_.end(); ++it) {
-    native_display_delegate_->Configure(*(it->display), it->selected_mode,
-                                        it->display->origin());
-  }
+  force_configure_ = true;
+  RunPendingConfiguration();
 }
 
 void DisplayConfigurator::RelinquishControl() {