Make //content responsible for generating notification Ids

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;
+    return;  // no need to propagate programmatic close events
 
-  int64_t persistent_notification_id;
-  GURL notification_origin(origin);
+  const 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);
+      profile, 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);
+  const GURL notification_origin(origin);
   DCHECK(notification_origin.is_valid());
+
   PlatformNotificationServiceImpl::GetInstance()->OnPersistentNotificationClick(
-      profile, persistent_notification_id, notification_origin, action_index);
+      profile, 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.
 }