Implement native web notifications for mac

chrome/browser/notifications/message_center_notification_manager.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.
 
 #include "chrome/browser/notifications/message_center_notification_manager.h"
 
 #include <utility>
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 25 matching lines @@
 #if defined(OS_CHROMEOS)
 #include "chrome/browser/notifications/login_state_notification_blocker_chromeos.h"
 #include "chrome/browser/ui/ash/multi_user/multi_user_util.h"
 #endif
 
 #if defined(USE_ASH)
 #include "ash/shell.h"
 #include "ash/system/web_notification/web_notification_tray.h"
 #endif
 
+// Mac does support native notifications and defines this method
+// in notification_ui_manager_mac.mm
+#if !defined(OS_MACOSX)
+// static
+NotificationUIManager*
+NotificationUIManager::CreateNativeNotificationManager() {
+  return nullptr;
+}
+#endif
+
 MessageCenterNotificationManager::MessageCenterNotificationManager(
     message_center::MessageCenter* message_center,
     scoped_ptr<message_center::NotifierSettingsProvider> settings_provider)
     : message_center_(message_center),
       settings_provider_(std::move(settings_provider)),
       system_observer_(this),
       stats_collector_(message_center),
-      google_now_stats_collector_(message_center)
-{
+      google_now_stats_collector_(message_center) {
   message_center_->AddObserver(this);
   message_center_->SetNotifierSettingsProvider(settings_provider_.get());
 
 #if defined(OS_CHROMEOS)
   blockers_.push_back(make_scoped_ptr(
       new LoginStateNotificationBlockerChromeOS(message_center)));
 #else
   blockers_.push_back(make_scoped_ptr(
       new ScreenLockNotificationBlocker(message_center)));
 #endif
@@ skipping 311 matching lines @@
        it != registry->enabled_extensions().end();
        ++it) {
     if ((*it->get()).permissions_data()->HasAPIPermission(
             extensions::APIPermission::ID::kNotificationProvider)) {
       extension_id = (*it->get()).id();
       return extension_id;
     }
   }
   return extension_id;
 }