Implement cursor changing on Mushrome

ui/display/manager/display_manager.cc

Index: ui/display/manager/display_manager.cc
diff --git a/ui/display/manager/display_manager.cc b/ui/display/manager/display_manager.cc
index 1873139ddc04c10b522f04b5da90583fe854eee5..1c29a1d25f9317709788f49290e2ef8bd48ab002 100644
--- a/ui/display/manager/display_manager.cc
+++ b/ui/display/manager/display_manager.cc
@@ -696,13 +696,13 @@ void DisplayManager::UpdateDisplaysWith(
   if (multi_display_mode_ != MIRRORING)
     multi_display_mode_ = current_default_multi_display_mode_;
 
-  CreateSoftwareMirroringDisplayInfo(&new_display_info_list);
-
   // Close the mirroring window if any here to avoid creating two compositor on
   // one display.
   if (delegate_)
     delegate_->CloseMirroringDisplayIfNotNecessary();
 
+  CreateSoftwareMirroringDisplayInfo(&new_display_info_list);
+
   Displays new_displays;
   Displays removed_displays;
   std::map<size_t, uint32_t> display_changes;