Add ArcNotificationManager for new ARC notification

ui/arc/notification/arc_notification_item.h

Index: ui/arc/notification/arc_notification_item.h
diff --git a/ui/arc/notification/arc_notification_item.h b/ui/arc/notification/arc_notification_item.h
new file mode 100644
index 0000000000000000000000000000000000000000..902471686dd482a52cb4f9249c85d0c78b61e441
--- /dev/null
+++ b/ui/arc/notification/arc_notification_item.h
@@ -0,0 +1,73 @@
+// 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_NOTIFICATION_ITEM_H_
+#define UI_ARC_NOTIFICATION_ARC_NOTIFICATION_ITEM_H_
+
+#include <string>
+
+#include "base/macros.h"
+#include "base/memory/weak_ptr.h"
+#include "base/threading/thread_checker.h"
+#include "components/signin/core/account_id/account_id.h"
+#include "third_party/skia/include/core/SkBitmap.h"
+#include "ui/arc/notification/arc_notification_manager.h"
+#include "ui/message_center/message_center.h"
+
+namespace arc {
+
+// The class represents each ARC notification. One instance of this class
+// corresponds to one ARC notification.
+class ArcNotificationItem {
+ public:
+  ArcNotificationItem(ArcNotificationManager* manager,
+                      message_center::MessageCenter* message_center,
+                      const std::string& notification_key,
+                      const AccountId& profile_id);
+  ~ArcNotificationItem();
+
+  void UpdateWithArcNotificationData(const ArcNotificationData& data);
+
+  // Methods called from ArcNotificationManager:
+  void OnClosedFromAndroid();
+
+  // Methods called from ArcNotificationItemDelegate:
+  void Close(bool by_user);
+  void Click();
+
+ private:
+  void OnImageDecoded(const SkBitmap& bitmap);
+
+  ArcNotificationManager* const manager_;
+  message_center::MessageCenter* const message_center_;
+  const AccountId profile_id_;
+
+  const std::string notification_key_;
+  const std::string notification_id_;
+
+  // Stores on-going notification data during the image decoding.
+  // This field will be removed after removing async task of image decoding.
+  scoped_ptr<message_center::Notification> notification_;
+
+  // The flag to indicate that the removing is initiated by the manager and we
+  // don't need to notify a remove event to the manager.
+  // This is true only when:
+  //   (1) the notification is being removed
+  //   (2) the removing is initiated by manager
+  bool being_removed_by_manager_ = false;
+
+  // Stores the latest notification data which is newer than the on-going data.
+  // If the on-going data is either none or the latest, this is null.
+  // This field will be removed after removing async task of image decoding.
+  ArcNotificationDataPtr newer_data_;
+
+  base::ThreadChecker thread_checker_;
+  base::WeakPtrFactory<ArcNotificationItem> weak_ptr_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(ArcNotificationItem);
+};
+
+}  // namespace arc
+
+#endif  // UI_ARC_NOTIFICATION_ARC_NOTIFICATION_ITEM_H_