Makes NewWindow() take set of properties for window

components/mus/ws/window_tree_host_impl.cc

 // Copyright 2015 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.
 
 #include "components/mus/ws/window_tree_host_impl.h"
 
 #include "base/strings/utf_string_conversions.h"
 #include "components/mus/common/types.h"
 #include "components/mus/ws/connection_manager.h"
 #include "components/mus/ws/display_manager.h"
@@ skipping 146 matching lines @@
 void WindowTreeHostImpl::OnDisplayClosed() {
   if (delegate_)
     delegate_->OnDisplayClosed();
 }
 
 void WindowTreeHostImpl::OnViewportMetricsChanged(
     const mojom::ViewportMetrics& old_metrics,
     const mojom::ViewportMetrics& new_metrics) {
   if (!root_) {
     root_.reset(connection_manager_->CreateServerWindow(
-        RootWindowId(connection_manager_->GetAndAdvanceNextHostId())));
+        RootWindowId(connection_manager_->GetAndAdvanceNextHostId()),
+        ServerWindow::Properties()));
     root_->SetBounds(gfx::Rect(new_metrics.size_in_pixels.To<gfx::Size>()));
     root_->SetVisible(true);
     if (delegate_)
       delegate_->OnDisplayInitialized();
     event_dispatcher_.set_root(root_.get());
   } else {
     root_->SetBounds(gfx::Rect(new_metrics.size_in_pixels.To<gfx::Size>()));
   }
   connection_manager_->ProcessViewportMetricsChanged(old_metrics, new_metrics);
 }
@@ skipping 108 matching lines @@
                                            base::Bind(&base::DoNothing));
 }
 
 void WindowTreeHostImpl::OnWindowDestroyed(ServerWindow* window) {
   windows_needing_frame_destruction_.erase(window);
   window->RemoveObserver(this);
 }
 
 }  // namespace ws
 }  // namespace mus