Fix broken threading model in CheckDesktopNotificationPermission

chrome/browser/extensions/extension_system.cc

Index: chrome/browser/extensions/extension_system.cc
diff --git a/chrome/browser/extensions/extension_system.cc b/chrome/browser/extensions/extension_system.cc
index b7099d2884433a18b2a20ab5a69720b2f018b50b..30fb44456d40e165b4f97f54e9946d98ef704fe0 100644
--- a/chrome/browser/extensions/extension_system.cc
+++ b/chrome/browser/extensions/extension_system.cc
@@ -33,6 +33,8 @@
 #include "chrome/browser/extensions/state_store.h"
 #include "chrome/browser/extensions/unpacked_installer.h"
 #include "chrome/browser/extensions/user_script_master.h"
+#include "chrome/browser/notifications/desktop_notification_service.h"
+#include "chrome/browser/notifications/desktop_notification_service_factory.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/ui/webui/extensions/extension_icon_source.h"
@@ -45,6 +47,7 @@
 #include "extensions/browser/lazy_background_task_queue.h"
 #include "extensions/common/constants.h"
 #include "extensions/common/manifest.h"
+#include "ui/message_center/notifier_settings.h"
 
 #if defined(OS_CHROMEOS)
 #include "chrome/browser/app_mode/app_mode_utils.h"
@@ -400,11 +403,20 @@ void ExtensionSystemImpl::RegisterExtensionWithRequestContexts(
   }
   bool incognito_enabled =
       extension_util::IsIncognitoEnabled(extension->id(), extension_service());
+  message_center::NotifierId notifier_id(
+      message_center::NotifierId::APPLICATION,
+      extension->id());
+
+  DesktopNotificationService* notification_service =
+      DesktopNotificationServiceFactory::GetForProfile(profile_);
+  bool notifications_disabled =
+      !notification_service->IsNotifierEnabled(notifier_id);
+
   BrowserThread::PostTask(
       BrowserThread::IO, FROM_HERE,
       base::Bind(&ExtensionInfoMap::AddExtension, info_map(),
                  make_scoped_refptr(extension), install_time,
-                 incognito_enabled));
+                 incognito_enabled, notifications_disabled));
 }
 
 void ExtensionSystemImpl::UnregisterExtensionWithRequestContexts(