Makes windowmanager draw non-client area

components/mus/example/wm/non_client_frame_controller.h

+// 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.
+
+#ifndef COMPONENTS_MUS_EXAMPLE_WM_NON_CLIENT_FRAME_CONTROLLER_H_
+#define COMPONENTS_MUS_EXAMPLE_WM_NON_CLIENT_FRAME_CONTROLLER_H_
+
+#include "base/macros.h"
+#include "ui/views/widget/widget_delegate.h"
+
+namespace mojo {
+class Shell;
+}
+
+namespace mus {
+class Window;
+}
+
+// Provides the non-client frame for mus Windows.
+class NonClientFrameController : public views::WidgetDelegateView {
+ public:
+  // NonClientFrameController deletes itself when |window| is destroyed.
+  NonClientFrameController(mojo::Shell* shell, mus::Window* window);
+
+ private:
+  ~NonClientFrameController() override;
+
+  // views::WidgetDelegateView:
+  views::View* GetContentsView() override;
+
+  DISALLOW_COPY_AND_ASSIGN(NonClientFrameController);
+};
+
+#endif  // COMPONENTS_MUS_EXAMPLE_WM_NON_CLIENT_FRAME_CONTROLLER_H_