Add unittest for MessageListView

ui/message_center/views/message_center_view.h

 // Copyright (c) 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_MESSAGE_CENTER_VIEW_H_
 #define UI_MESSAGE_CENTER_VIEWS_MESSAGE_CENTER_VIEW_H_
 
 #include <stddef.h>
 
 #include "base/macros.h"
 #include "ui/gfx/animation/animation_delegate.h"
 #include "ui/message_center/message_center_export.h"
 #include "ui/message_center/message_center_observer.h"
 #include "ui/message_center/notification_list.h"
 #include "ui/message_center/views/message_center_controller.h"
+#include "ui/message_center/views/message_list_view.h"
 #include "ui/message_center/views/message_view.h"
 #include "ui/views/view.h"
 
 namespace gfx {
 class MultiAnimation;
 }  // namespace gfx
 
 namespace message_center {
 
 class MessageCenter;
 class MessageCenterButtonBar;
 class MessageCenterTray;
 class MessageView;
 class MessageViewContextMenuController;
 class MessageListView;
 class NotifierSettingsView;
 
 // Container for all the top-level views in the notification center, such as the
 // button bar, settings view, scrol view, and message list view.  Acts as a
 // controller for the message list view, passing data back and forth to message
 // center.
-class MESSAGE_CENTER_EXPORT MessageCenterView : public views::View,
-                                                public MessageCenterObserver,
-                                                public MessageCenterController,
-                                                public gfx::AnimationDelegate {
+class MESSAGE_CENTER_EXPORT MessageCenterView
+    : public views::View,
+      public MessageCenterObserver,
+      public MessageCenterController,
+      public MessageListView::Observer,
+      public gfx::AnimationDelegate {
  public:
   MessageCenterView(MessageCenter* message_center,
                     MessageCenterTray* tray,
                     int max_height,
                     bool initially_settings_visible,
                     bool top_down);
   ~MessageCenterView() override;
 
   void SetNotifications(const NotificationList::Notifications& notifications);
 
   void ClearAllClosableNotifications();
-  void OnAllNotificationsCleared();
 
   size_t NumMessageViewsForTest() const;
 
   void SetSettingsVisible(bool visible);
   void OnSettingsChanged();
   bool settings_visible() const { return settings_visible_; }
   MessageCenterTray* tray() { return tray_; }
 
   void SetIsClosing(bool is_closing);
 
@@ skipping 16 matching lines @@
   void RemoveNotification(const std::string& notification_id,
                           bool by_user) override;
   std::unique_ptr<ui::MenuModel> CreateMenuModel(
       const NotifierId& notifier_id,
       const base::string16& display_source) override;
   bool HasClickedListener(const std::string& notification_id) override;
   void ClickOnNotificationButton(const std::string& notification_id,
                                  int button_index) override;
   void ClickOnSettingsButton(const std::string& notification_id) override;
 
+  // Overridden from MessageListView::Observer:
+  void OnAllNotificationsCleared() override;
+
   // Overridden from gfx::AnimationDelegate:
   void AnimationEnded(const gfx::Animation* animation) override;
   void AnimationProgressed(const gfx::Animation* animation) override;
   void AnimationCanceled(const gfx::Animation* animation) override;
 
  private:
   friend class MessageCenterViewTest;
 
   enum class Mode { NOTIFICATIONS, SETTINGS, BUTTONS_ONLY };
 
@@ skipping 46 matching lines @@
   Mode mode_ = Mode::BUTTONS_ONLY;
 
   std::unique_ptr<MessageViewContextMenuController> context_menu_controller_;
 
   DISALLOW_COPY_AND_ASSIGN(MessageCenterView);
 };
 
 }  // namespace message_center
 
 #endif  // UI_MESSAGE_CENTER_VIEWS_MESSAGE_CENTER_VIEW_H_