convert //mash to std::unique_ptr

mash/wm/frame/non_client_frame_view_mash.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 "mash/wm/frame/non_client_frame_view_mash.h"
 
 #include <algorithm>
+#include <memory>
 #include <vector>
 
 #include "base/macros.h"
 #include "components/mus/public/cpp/window.h"
 #include "components/mus/public/cpp/window_tree_connection.h"
 #include "grit/mash_wm_resources.h"
 #include "mash/wm/frame/caption_buttons/frame_caption_button_container_view.h"
 #include "mash/wm/frame/default_header_painter.h"
 #include "mash/wm/frame/frame_border_hit_test_controller.h"
 #include "mash/wm/frame/header_painter.h"
@@ skipping 45 matching lines @@
 
   FrameCaptionButtonContainerView* caption_button_container() {
     return caption_button_container_;
   }
 
  private:
   // The widget that the caption buttons act on.
   views::Widget* frame_;
 
   // Helper for painting the header.
-  scoped_ptr<DefaultHeaderPainter> header_painter_;
+  std::unique_ptr<DefaultHeaderPainter> header_painter_;
 
   // View which contains the window caption buttons.
   FrameCaptionButtonContainerView* caption_button_container_;
 
   mus::Window* window_;
 
   DISALLOW_COPY_AND_ASSIGN(HeaderView);
 };
 
 NonClientFrameViewMash::HeaderView::HeaderView(views::Widget* frame,
@@ skipping 269 matching lines @@
 void NonClientFrameViewMash::OnWindowTreeFocusChanged(mus::Window* gained_focus,
                                                       mus::Window* lost_focus) {
   const bool had_focus = lost_focus && window_->Contains(lost_focus);
   const bool has_focus = gained_focus && window_->Contains(gained_focus);
   if (had_focus != has_focus)
     SchedulePaint();
 }
 
 }  // namespace wm
 }  // namespace mash