Add ArcNotificationManager for new ARC notification

ui/arc/notification/arc_notification_manager.h

Index: ui/arc/notification/arc_notification_manager.h
diff --git a/ui/arc/notification/arc_notification_manager.h b/ui/arc/notification/arc_notification_manager.h
new file mode 100644
index 0000000000000000000000000000000000000000..cc09a2026911ba496a863042c84c7b5413288456
--- /dev/null
+++ b/ui/arc/notification/arc_notification_manager.h
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+// 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_MANAGER_H_
+#define UI_ARC_NOTIFICATION_ARC_NOTIFICATION_MANAGER_H_
+
+#include <map>
+#include <string>
+
+#include "base/containers/scoped_ptr_hash_map.h"
+#include "components/arc/arc_bridge_service.h"
+#include "components/arc/common/notifications.mojom.h"
+#include "components/signin/core/account_id/account_id.h"
+#include "mojo/public/cpp/bindings/binding.h"
+
+namespace arc {
+
+class ArcNotificationItem;
+
+class ArcNotificationManager : public ArcBridgeService::Observer,
+                               public NotificationsHost {
+ public:
+  ArcNotificationManager(ArcBridgeService* bridge_service,
+                         const AccountId& main_profile_id);
+  ~ArcNotificationManager() override;
+
+  // ArcBridgeService::Observer implementation:
+  void OnNotificationsInstanceReady() override;
+
+  // NotificationsHost implementation:
+  void OnNotificationPosted(ArcNotificationDataPtr data) override;
+  void OnNotificationRemoved(const mojo::String& key) override;
+
+  // Methods called from ArcNotificationItem:
+  void SendNotificationRemovedFromChrome(const std::string& key);
+  void SendNotificationClickedOnChrome(const std::string& key);
+
+ private:
+  ArcBridgeService* const arc_bridge_;
+  const AccountId main_profile_id_;
+
+  typedef base::ScopedPtrHashMap<std::string, scoped_ptr<ArcNotificationItem>>
+      ItemMap;
+  ItemMap items_;
+
+  mojo::Binding<arc::NotificationsHost> binding_;
+
+  DISALLOW_COPY_AND_ASSIGN(ArcNotificationManager);
+};
+
+}  // namespace arc
+
+#endif  // UI_ARC_NOTIFICATION_ARC_NOTIFICATION_MANAGER_H_