Introduce a new API to handle native notification clicks

chrome/browser/notifications/in_page_notification_handler.cc

+// 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.
+
+#include "chrome/browser/notifications/in_page_notification_handler.h"
+#include "chrome/browser/notifications/notification.h"
+#include "chrome/browser/notifications/notification_delegate.h"
+#include "chrome/browser/notifications/platform_notification_service_impl.h"
+
+InPageNotificationHandler::InPageNotificationHandler() {}
+InPageNotificationHandler::~InPageNotificationHandler() {}
+
+void InPageNotificationHandler::HandleNotificationOperation(
+    notification_operation_common::NotificationOperation operation,
+    Profile* profile,
+    const std::string& origin,
+    const std::string& notification_id,
+    int action_index) {
+  if (notifications_.find(notification_id) != notifications_.end()) {
+    switch (operation) {
+      case notification_operation_common::NOTIFICATION_CLICK:
+        notifications_[notification_id]->delegate()->Click();
+        break;
+      case notification_operation_common::NOTIFICATION_CLOSE:
+        notifications_[notification_id]->delegate()->Close(true /* by user */);
+        notifications_.erase(notification_id);
+        break;
+      case notification_operation_common::NOTIFICATION_SETTINGS:
+        notification_operation_common::OpenNotificationSettings(profile);
+        break;
+    }
+  }
+}
+
+void InPageNotificationHandler::RegisterNotification(
+    const std::string& notification_id,
+    std::unique_ptr<Notification> notification) {
+  DCHECK_EQ(notifications_.count(notification_id), 0u);
+  notifications_[notification_id] = std::move(notification);
+}
+
+void InPageNotificationHandler::CloseNotification(
+    Profile* profile,
+    const std::string& notification_id) {
+  if (notifications_.find(notification_id) != notifications_.end()) {
+    notifications_[notification_id]->delegate()->Close(false /* by user */);
+    notifications_.erase(notification_id);
+  }
+}
+
+notification_operation_common::NotificationHandlerType
+InPageNotificationHandler::NotificationType() {
+  return notification_operation_common::INPAGE_NOTIFICATION;
+}