MD Settings: Add display layout

chrome/browser/extensions/display_info_provider_chromeos.cc

Index: chrome/browser/extensions/display_info_provider_chromeos.cc
diff --git a/chrome/browser/extensions/display_info_provider_chromeos.cc b/chrome/browser/extensions/display_info_provider_chromeos.cc
index 1b2dc27ce259a03e96fb4b42ab50f92ff01a8a43..bce654eb45e8cea7a91260c1f41a3e8d66e0d3a5 100644
--- a/chrome/browser/extensions/display_info_provider_chromeos.cc
+++ b/chrome/browser/extensions/display_info_provider_chromeos.cc
@@ -555,6 +555,9 @@ DisplayInfoProviderChromeOS::GetDisplayLayout() {
   ash::DisplayManager* display_manager =
       ash::Shell::GetInstance()->display_manager();
 
+  if (display_manager->num_connected_displays() < 2)
+    return DisplayInfoProvider::DisplayLayoutList();
+
   display::Screen* screen = display::Screen::GetScreen();
   std::vector<display::Display> displays = screen->GetAllDisplays();