Touch HUD app for mustash

ash/mus/root_window_controller.cc

Index: ash/mus/root_window_controller.cc
diff --git a/ash/mus/root_window_controller.cc b/ash/mus/root_window_controller.cc
index 3a3f0d17551dd066b1f005012b5c71e60fe2d8f4..6e5b0ac26dedb9d73d3bd8e7878a6ef63c30d15c 100644
--- a/ash/mus/root_window_controller.cc
+++ b/ash/mus/root_window_controller.cc
@@ -28,6 +28,7 @@
 #include "ash/mus/screenlock_layout.h"
 #include "ash/mus/shelf_layout_manager.h"
 #include "ash/mus/status_layout_manager.h"
+#include "ash/mus/touch_hud_layout.h"
 #include "ash/mus/window_manager.h"
 #include "base/bind.h"
 #include "base/command_line.h"
@@ -257,6 +258,11 @@ void RootWindowController::CreateLayoutManagers() {
       GetWindowByShellWindowId(kShellWindowId_PanelContainer);
   panel_container->SetLayoutManager(
       base::WrapUnique(new PanelLayoutManager(panel_container)));
+
+  WmWindowMus* touch_hud_container =
+      GetWindowByShellWindowId(kShellWindowId_OverlayContainer);
+  layout_managers_[touch_hud_container->mus_window()].reset(
+      new TouchHudLayout(touch_hud_container->mus_window()));
 }
 
 }  // namespace mus