Fix broken threading model in CheckDesktopNotificationPermission

extensions/browser/info_map.h

Index: extensions/browser/info_map.h
diff --git a/extensions/browser/info_map.h b/extensions/browser/info_map.h
index d68933fb7d2e484642bf45dd6730233fc1249ea9..407982c5333546da8941af64fe3db54869020ddf 100644
--- a/extensions/browser/info_map.h
+++ b/extensions/browser/info_map.h
@@ -35,7 +35,8 @@ class InfoMap : public base::RefCountedThreadSafe<InfoMap> {
   // Callback for when new extensions are loaded.
   void AddExtension(const extensions::Extension* extension,
                     base::Time install_time,
-                    bool incognito_enabled);
+                    bool incognito_enabled,
+                    bool notifications_disabled);
 
   // Callback for when an extension is unloaded.
   void RemoveExtension(const std::string& extension_id,
@@ -85,6 +86,12 @@ class InfoMap : public base::RefCountedThreadSafe<InfoMap> {
   void SetSigninProcess(int process_id);
   bool IsSigninProcess(int process_id) const;
 
+  // Notifications can be enabled/disabled in real time by the user.
+  void SetNotificationsDisabled(const std::string& extension_id,
+                               bool notifications_disabled);
+  bool AreNotificationsDisabled(const std::string& extension_id)
+      const;
+
  private:
   friend class base::RefCountedThreadSafe<InfoMap>;