Do not create display_change_listener for parent=NULL.

ui/views/controls/menu/menu_runner.cc

Index: ui/views/controls/menu/menu_runner.cc
diff --git a/ui/views/controls/menu/menu_runner.cc b/ui/views/controls/menu/menu_runner.cc
index 16ad24eebe6e59db0fb912dff29a57f5c6354924..c2c4dd22d914566f7565754e5770b4b2a753804a 100644
--- a/ui/views/controls/menu/menu_runner.cc
+++ b/ui/views/controls/menu/menu_runner.cc
@@ -284,7 +284,7 @@ MenuRunner::RunResult MenuRunner::RunMenuAt(Widget* parent,
   // The parent of the nested menu will have created a DisplayChangeListener, so
   // we avoid creating a DisplayChangeListener if nested. Drop menus are
   // transient, so we don't cancel in that case.
-  if ((types & (IS_NESTED | FOR_DROP)) == 0) {
+  if ((types & (IS_NESTED | FOR_DROP)) == 0 && parent != NULL) {

[Ben Goodger (Google), 2013/03/11 16:10:07]

nit && parent

[Jun Mukai, 2013/03/11 16:42:29]

Done.

     display_change_listener_.reset(
         internal::DisplayChangeListener::Create(parent, this));
   }