Gets mustash frames looking like that of ash

mash/wm/non_client_frame_view_impl.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 MASH_WM_NON_CLIENT_FRAME_VIEW_IMPL_H_
-#define MASH_WM_NON_CLIENT_FRAME_VIEW_IMPL_H_
-
-#include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
-#include "components/mus/public/cpp/window_observer.h"
-#include "ui/compositor/paint_cache.h"
-#include "ui/views/window/custom_frame_view.h"
-
-class MoveLoop;
-
-class NonClientFrameViewImpl : public views::CustomFrameView,
-                               public mus::WindowObserver {
- public:
-  explicit NonClientFrameViewImpl(mus::Window* window);
-  ~NonClientFrameViewImpl() override;
-
- private:
-  // CustomFrameView:
-  gfx::Rect GetBoundsForClientView() const override;
-  void OnPaint(gfx::Canvas* canvas) override;
-  void PaintChildren(const ui::PaintContext& context) override;
-  bool OnMousePressed(const ui::MouseEvent& event) override;
-  bool OnMouseDragged(const ui::MouseEvent& event) override;
-  void OnMouseReleased(const ui::MouseEvent& event) override;
-  void OnMouseCaptureLost() override;
-
-  // mus::WindowObserver:
-  void OnWindowClientAreaChanged(mus::Window* window,
-                                 const gfx::Insets& old_client_area) override;
-  void OnWindowDestroyed(mus::Window* window) override;
-
- private:
-  bool StartMoveLoopIfNecessary(const ui::Event& event);
-  void ContinueMove(const ui::Event& event);
-  void StopMove();
-
-  mus::Window* window_;
-  ui::PaintCache paint_cache_;
-  scoped_ptr<MoveLoop> move_loop_;
-
-  DISALLOW_COPY_AND_ASSIGN(NonClientFrameViewImpl);
-};
-
-#endif  // MASH_WM_NON_CLIENT_FRAME_VIEW_IMPL_H_