Makes sure bounds and visibilty are updated correctly for new displays

ui/aura/test/mus/window_tree_client_private.h

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef UI_AURA_TEST_MUS_WINDOW_TREE_CLIENT_PRIVATE_H_
 #define UI_AURA_TEST_MUS_WINDOW_TREE_CLIENT_PRIVATE_H_
 
 #include <stdint.h>
 
 #include <memory>
 
 #include "base/macros.h"
+#include "services/ui/public/interfaces/window_tree_constants.mojom.h"
 #include "ui/aura/mus/mus_types.h"
 
 namespace display {
 class Display;
 }
 
 namespace ui {
 class Event;
 
 namespace mojom {
 class WindowTree;
 }
 }
 
 namespace aura {
 
 class Window;
 class WindowTreeClient;
-class WindowTreeHost;
+class WindowTreeHostMus;
 
 // Use to access implementation details of WindowTreeClient.
 class WindowTreeClientPrivate {
  public:
   explicit WindowTreeClientPrivate(WindowTreeClient* tree_client_impl);
   explicit WindowTreeClientPrivate(Window* window);
   ~WindowTreeClientPrivate();
 
   // Calls OnEmbed() on the WindowTreeClient.
   void OnEmbed(ui::mojom::WindowTree* window_tree);
 
-  WindowTreeHost* CallWmNewDisplayAdded(const display::Display& display);
+  WindowTreeHostMus* CallWmNewDisplayAdded(const display::Display& display);
+  WindowTreeHostMus* CallWmNewDisplayAdded(const display::Display& display,
+                                           ui::mojom::WindowDataPtr root_data,
+                                           bool parent_drawn);
 
   // Pretends that |event| has been received from the window server.
   void CallOnWindowInputEvent(Window* window, std::unique_ptr<ui::Event> event);
 
   void CallOnCaptureChanged(Window* new_capture, Window* old_capture);
 
   // Sets the WindowTree and client id.
   void SetTreeAndClientId(ui::mojom::WindowTree* window_tree,
                           ClientSpecificId client_id);
 
   bool HasPointerWatcher();
 
  private:
   WindowTreeClient* tree_client_impl_;
   uint16_t next_window_id_ = 1u;
 
   DISALLOW_COPY_AND_ASSIGN(WindowTreeClientPrivate);
 };
 
 }  // namespace ui
 
 #endif  // UI_AURA_TEST_MUS_WINDOW_TREE_CLIENT_PRIVATE_H_