Reland r262272: "Hook up the Info URL from SyncedNotificationsAppInfo".

chrome/browser/notifications/sync_notifier/chrome_notifier_service.cc

 // Copyright (c) 2012 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.
 
 // The ChromeNotifierService works together with sync to maintain the state of
 // user notifications, which can then be presented in the notification center,
 // via the Notification UI Manager.
 
 #include "chrome/browser/notifications/sync_notifier/chrome_notifier_service.h"
 
@@ skipping 802 matching lines @@
 
   return synced_notification_app_info_service_->
       FindSyncedNotificationAppInfoByAppId(app_id);
 }
 
 const Notification ChromeNotifierService::CreateWelcomeNotificationForService(
     SyncedNotificationAppInfo* app_info) {
   std::string welcome_notification_id = base::GenerateGUID();
   message_center::NotifierId notifier_id = app_info->GetNotifierId();
   scoped_refptr<WelcomeDelegate> delegate(
-      new WelcomeDelegate(welcome_notification_id, profile_, notifier_id));
+      new WelcomeDelegate(welcome_notification_id,
+                          profile_,
+                          notifier_id,
+                          app_info->welcome_link_url()));
 
   message_center::ButtonInfo button_info(
       l10n_util::GetStringUTF16(IDS_NOTIFIER_WELCOME_BUTTON));
   button_info.icon = ui::ResourceBundle::GetSharedInstance().GetImageNamed(
       IDR_NOTIFIER_BLOCK_BUTTON);
 
   message_center::RichNotificationData rich_notification_data;
   rich_notification_data.buttons.push_back(button_info);
   return Notification(
       message_center::NOTIFICATION_TYPE_BASE_FORMAT,
       GURL(kSyncedNotificationsWelcomeOrigin),
       base::UTF8ToUTF16(app_info->settings_display_name()),
       l10n_util::GetStringUTF16(IDS_NOTIFIER_WELCOME_BODY),
       app_info->icon(),
       blink::WebTextDirectionDefault,
       notifier_id,
       l10n_util::GetStringUTF16(IDS_NOTIFICATION_WELCOME_DISPLAY_SOURCE),
       base::UTF8ToUTF16(welcome_notification_id),
       rich_notification_data,
       delegate.get());
 }
 
 }  // namespace notifier