Introduce a new API to handle native notification clicks

chrome/browser/notifications/persistent_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/persistent_notification_handler.h"
+
+#include "base/logging.h"
+#include "base/strings/string_number_conversions.h"
+#include "chrome/browser/notifications/platform_notification_service_impl.h"
+#include "chrome/browser/profiles/profile.h"
+
+PersistentNotificationHandler::PersistentNotificationHandler() {}
+PersistentNotificationHandler::~PersistentNotificationHandler() {}
+
+void PersistentNotificationHandler::OnClose(Profile* profile,
+                                            const std::string& origin,
+                                            const std::string& notification_id,
+                                            bool by_user) {
+  // No need to propage back Close events from JS.
+  if (!by_user)
+    return;
+
+  int64_t persistent_notification_id;
+  GURL notification_origin(origin);
+  DCHECK(notification_origin.is_valid());
+  if (!base::StringToInt64(notification_id, &persistent_notification_id)) {
+    LOG(ERROR) << "Unable to convert notification ID: " << notification_id
+               << " to integer.";
+    return;
+  }
+  PlatformNotificationServiceImpl::GetInstance()->OnPersistentNotificationClose(
+      profile, persistent_notification_id, notification_origin, by_user);
+}
+
+void PersistentNotificationHandler::OnClick(Profile* profile,
+                                            const std::string& origin,
+                                            const std::string& notification_id,
+                                            int action_index) {
+  int64_t persistent_notification_id;
+  if (!base::StringToInt64(notification_id, &persistent_notification_id)) {
+    LOG(ERROR) << "Unable to convert notification ID: " << notification_id
+               << " to integer.";
+    return;
+  }
+  GURL notification_origin(origin);
+  DCHECK(notification_origin.is_valid());
+  PlatformNotificationServiceImpl::GetInstance()->OnPersistentNotificationClick(
+      profile, persistent_notification_id, notification_origin, action_index);
+}
+
+void PersistentNotificationHandler::OpenSettings(Profile* profile) {
+  NotificationCommon::OpenNotificationSettings(profile);
+}
+
+void PersistentNotificationHandler::RegisterNotification(
+    const std::string& notification_id,
+    NotificationDelegate* delegate) {
+  // Nothing to do here since there is no state kept.
+}