Support the ignored_by_shelf flag for Mus windows.

ui/views/mus/native_widget_mus.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 "ui/views/mus/native_widget_mus.h"
 
 #include "base/macros.h"
 #include "base/thread_task_runner_handle.h"
 #include "components/mus/public/cpp/property_type_converters.h"
 #include "components/mus/public/cpp/window.h"
@@ skipping 417 matching lines @@
       non_client_view->bounds().width() - client_area_rect.right()));
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // NativeWidgetMus, private:
 
 // static
 void NativeWidgetMus::ConfigurePropertiesForNewWindow(
     const Widget::InitParams& init_params,
     std::map<std::string, std::vector<uint8_t>>* properties) {
+  properties->insert(init_params.mus_properties.begin(),
+                     init_params.mus_properties.end());
   if (!init_params.bounds.IsEmpty()) {
     (*properties)[mus::mojom::WindowManager::kUserSetBounds_Property] =
         mojo::ConvertTo<std::vector<uint8_t>>(init_params.bounds);
   }
   if (!init_params.name.empty()) {
     (*properties)[mus::mojom::WindowManager::kName_Property] =
         mojo::ConvertTo<std::vector<uint8_t>>(init_params.name);
   }
 
   if (!Widget::RequiresNonClientView(init_params.type))
@@ skipping 673 matching lines @@
     window_tree_host_->Show();
     GetNativeWindow()->Show();
   } else {
     window_tree_host_->Hide();
     GetNativeWindow()->Hide();
   }
   native_widget_delegate_->OnNativeWidgetVisibilityChanged(window->visible());
 }
 
 }  // namespace views