Move message_center::CustomNotificationView to arc::ArcNotificationView

ui/arc/notification/arc_custom_notification_view.h

 // Copyright 2016 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 UI_ARC_NOTIFICATION_ARC_CUSTOM_NOTIFICATION_VIEW_H_
 #define UI_ARC_NOTIFICATION_ARC_CUSTOM_NOTIFICATION_VIEW_H_
 
 #include <memory>
 #include <string>
 
 #include "base/macros.h"
+#include "ui/arc/notification/arc_notification_content_view_delegate.h"
 #include "ui/arc/notification/arc_notification_item.h"
 #include "ui/arc/notification/arc_notification_surface_manager.h"
 #include "ui/aura/window_observer.h"
 #include "ui/gfx/animation/animation_delegate.h"
-#include "ui/message_center/views/custom_notification_content_view_delegate.h"
 #include "ui/message_center/views/padded_button.h"
 #include "ui/views/controls/button/button.h"
 #include "ui/views/controls/native/native_view_host.h"
 
 namespace exo {
 class NotificationSurface;
 }
 
 namespace gfx {
 class LinearAnimation;
 }
 
 namespace ui {
 struct AXActionData;
 }
 
 namespace views {
 class FocusTraversable;
 class Widget;
 }
 
 namespace arc {
 
+// ArcCustomNotificationView is a view to host NotificationSurface and show the
+// content in itself. This is implemented as a child of ArcNotificationView.
+// TODO(yoshiki): Rename this class to ArcNotificationContentsView.
 class ArcCustomNotificationView
     : public views::NativeViewHost,
       public views::ButtonListener,
       public aura::WindowObserver,
       public ArcNotificationItem::Observer,
       public ArcNotificationSurfaceManager::Observer,
       public gfx::AnimationDelegate {
  public:
   explicit ArcCustomNotificationView(ArcNotificationItem* item);
   ~ArcCustomNotificationView() override;
 
-  std::unique_ptr<message_center::CustomNotificationContentViewDelegate>
+  std::unique_ptr<ArcNotificationContentViewDelegate>
   CreateContentViewDelegate();
 
  private:
   class ContentViewDelegate;
   class EventForwarder;
   class SettingsButton;
   class SlideHelper;
 
   // A image button class used for the settings button and the close button.
   // We can't use forward declaration for this class due to std::unique_ptr<>
@@ skipping 88 matching lines @@
   bool in_layout_ = false;
 
   std::unique_ptr<gfx::LinearAnimation> control_button_color_animation_;
 
   DISALLOW_COPY_AND_ASSIGN(ArcCustomNotificationView);
 };
 
 }  // namespace arc
 
 #endif  // UI_ARC_NOTIFICATION_ARC_CUSTOM_NOTIFICATION_VIEW_H_