Change a bug reference in a comment.

base/threading/thread_restrictions.h

Index: base/threading/thread_restrictions.h
diff --git a/base/threading/thread_restrictions.h b/base/threading/thread_restrictions.h
index fc3824e76fb465fa88d5e4da8167ff23325e441a..b6cfa723206980df9f1306846350b306d07280de 100644
--- a/base/threading/thread_restrictions.h
+++ b/base/threading/thread_restrictions.h
@@ -207,7 +207,7 @@ class BASE_EXPORT ThreadRestrictions {
   friend class disk_cache::BackendImpl;           // http://crbug.com/74623
   friend class disk_cache::InFlightIO;            // http://crbug.com/74623
   friend class net::internal::AddressTrackerLinux;  // http://crbug.com/125097
-  friend class net::NetworkChangeNotifierMac;     // http://crbug.com/502005
+  friend class net::NetworkChangeNotifierMac;     // http://crbug.com/125097
   friend class ::BrowserProcessImpl;              // http://crbug.com/125207
   friend class ::NativeBackendKWallet;            // http://crbug.com/125331
   // END USAGE THAT NEEDS TO BE FIXED.