Remove experimental code fro grouping notifications from the same source.

ui/message_center/views/group_view.h

-// Copyright 2013 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_MESSAGE_CENTER_VIEWS_GROUP_VIEW_H_
-#define UI_MESSAGE_CENTER_VIEWS_GROUP_VIEW_H_
-
-#include "ui/gfx/image/image_skia.h"
-#include "ui/message_center/views/message_center_controller.h"
-#include "ui/message_center/views/message_center_view.h"
-#include "ui/message_center/views/message_view.h"
-
-namespace message_center {
-
-class BoundedLabel;
-class MessageCenter;
-class NotificationButton;
-
-// View that displays a placeholder representing several notifications and a
-// button to expand it into a set of individual notifications.
-class GroupView : public MessageView, public MessageViewController {
- public:
-  // The group view currently shows the latest notificaiton w/o buttons
-  // and a single button like "N more from XYZ".
-  // Each GroupView has a notifier_id which it uses to report clicks and other
-  // user actions to Client.
-  GroupView(MessageCenterController* controller,
-            const NotifierId& notifier_id,
-            const Notification& last_notification,
-            const gfx::ImageSkia& group_icon,
-            int group_size);
-
-  virtual ~GroupView();
-
-  // Overridden from views::View:
-  virtual gfx::Size GetPreferredSize() OVERRIDE;
-  virtual int GetHeightForWidth(int width) OVERRIDE;
-  virtual void Layout() OVERRIDE;
-  virtual void OnFocus() OVERRIDE;
-  virtual gfx::NativeCursor GetCursor(const ui::MouseEvent& event) OVERRIDE;
-
-  // Overridden from MessageView:
-  virtual void ButtonPressed(views::Button* sender,
-                             const ui::Event& event) OVERRIDE;
-
-  // Overridden from MessageViewController:
-  virtual void ClickOnNotification(const std::string& notification_id) OVERRIDE;
-  virtual void RemoveNotification(const std::string& notification_id,
-                                  bool by_user) OVERRIDE;
-
- private:
-  MessageCenterController* controller_;  // Weak, controls lifetime of views.
-  NotifierId notifier_id_;
-  base::string16 display_source_;
-  gfx::ImageSkia group_icon_;
-  int group_size_;
-  std::string last_notification_id_;
-
-  // Weak references to GroupView descendants owned by their parents.
-  views::View* top_view_;
-  views::View* bottom_view_;
-  BoundedLabel* title_view_;
-  BoundedLabel* message_view_;
-  BoundedLabel* context_message_view_;
-  views::View* icon_view_;
-  NotificationButton* more_button_;
-
-  DISALLOW_COPY_AND_ASSIGN(GroupView);
-};
-
-}  // namespace message_center
-
-#endif // UI_MESSAGE_CENTER_VIEWS_GROUP_VIEW_H_