Add unittests of ArcCustomNotificationView

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_custom_notification_item.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/message_center/views/custom_notification_content_view_delegate.h"
 #include "ui/views/controls/button/button.h"
 #include "ui/views/controls/native/native_view_host.h"
 
 namespace exo {
 class NotificationSurface;
 }
 
 namespace views {
 class FocusTraversable;
 class ImageButton;
 class Widget;
 }
 
 namespace arc {
 
 class ArcCustomNotificationView
     : public views::NativeViewHost,
       public views::ButtonListener,
       public aura::WindowObserver,
-      public ArcCustomNotificationItem::Observer,
+      public ArcNotificationItem::Observer,
       public ArcNotificationSurfaceManager::Observer {
  public:
-  explicit ArcCustomNotificationView(ArcCustomNotificationItem* item);
+  static const char kViewClassName[];

[hidehiko, 2017/03/02 15:38:16]

Could you add brief comment what this is for?

+
+  explicit ArcCustomNotificationView(ArcNotificationItem* item);
   ~ArcCustomNotificationView() override;
 
+  // views::View overrides:
+  const char* GetClassName() const override;
+
   std::unique_ptr<message_center::CustomNotificationContentViewDelegate>
   CreateContentViewDelegate();
 
  private:
+  friend class ArcCustomNotificationViewTest;
+
   class ContentViewDelegate;
   class ControlButton;
   class EventForwarder;
   class SettingsButton;
   class SlideHelper;
 
   void CreateFloatingControlButtons();
   void SetSurface(exo::NotificationSurface* surface);
   void UpdatePreferredSize();
   void UpdateControlButtonsVisiblity();
@@ skipping 24 matching lines @@
   void OnWindowDestroying(aura::Window* window) override;
 
   // ArcCustomNotificationItem::Observer
   void OnItemDestroying() override;
   void OnItemUpdated() override;
 
   // ArcNotificationSurfaceManager::Observer:
   void OnNotificationSurfaceAdded(exo::NotificationSurface* surface) override;
   void OnNotificationSurfaceRemoved(exo::NotificationSurface* surface) override;
 
-  ArcCustomNotificationItem* item_ = nullptr;
+  ArcNotificationItem* item_ = nullptr;
   exo::NotificationSurface* surface_ = nullptr;
 
   const std::string notification_key_;
 
   // A pre-target event handler to forward events on the surface to this view.
   // Using a pre-target event handler instead of a target handler on the surface
   // window because it has descendant aura::Window and the events on them need
   // to be handled as well.
   // TODO(xiyuan): Revisit after exo::Surface no longer has an aura::Window.
   std::unique_ptr<EventForwarder> event_forwarder_;
@@ skipping 14 matching lines @@
 
   // Protects from call loops between Layout and OnWindowBoundsChanged.
   bool in_layout_ = false;
 
   DISALLOW_COPY_AND_ASSIGN(ArcCustomNotificationView);
 };
 
 }  // namespace arc
 
 #endif  // UI_ARC_NOTIFICATION_ARC_CUSTOM_NOTIFICATION_VIEW_H_