Extracts parameters to WindowTreeHostMus into structure

ui/views/mus/desktop_window_tree_host_mus.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_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_WINDOW_TREE_HOST_MUS_H_
 #define UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_WINDOW_TREE_HOST_MUS_H_
 
 #include <memory>
 #include <set>
 
@@ skipping 15 matching lines @@
 
 class VIEWS_MUS_EXPORT DesktopWindowTreeHostMus
     : public DesktopWindowTreeHost,
       public MusClientObserver,
       public WidgetObserver,
       public aura::FocusSynchronizerObserver,
       public aura::WindowObserver,
       public aura::WindowTreeHostMus {
  public:
   DesktopWindowTreeHostMus(
+      aura::WindowTreeHostMusInitParams init_params,
       internal::NativeWidgetDelegate* native_widget_delegate,
-      DesktopNativeWidgetAura* desktop_native_widget_aura,
-      const cc::FrameSinkId& frame_sink_id,
-      const std::map<std::string, std::vector<uint8_t>>* mus_properties);
+      DesktopNativeWidgetAura* desktop_native_widget_aura);
   ~DesktopWindowTreeHostMus() override;
 
   // Called when the window was deleted on the server.
   void ServerDestroyedWindow() { CloseNow(); }
 
   // Controls whether the client area is automatically updated as necessary.
   void set_auto_update_client_area(bool value) {
     auto_update_client_area_ = value;
   }
 
@@ skipping 112 matching lines @@
 
   // Used so that Close() isn't immediate.
   base::WeakPtrFactory<DesktopWindowTreeHostMus> close_widget_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(DesktopWindowTreeHostMus);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_WIDGET_DESKTOP_AURA_DESKTOP_WINDOW_TREE_HOST_MUS_H_