ToolbarButton: Reset menu runner before deleting its menu's delegate

chrome/browser/ui/views/toolbar/toolbar_button.h

Index: chrome/browser/ui/views/toolbar/toolbar_button.h
diff --git a/chrome/browser/ui/views/toolbar/toolbar_button.h b/chrome/browser/ui/views/toolbar/toolbar_button.h
index c6e9915bff70fb174bfdab10fa0a40e0d1d59360..9282171e20bb3f1e6b11d4d9f2804978869e63bf 100644
--- a/chrome/browser/ui/views/toolbar/toolbar_button.h
+++ b/chrome/browser/ui/views/toolbar/toolbar_button.h
@@ -15,6 +15,10 @@
 
 class Profile;
 
+namespace test {
+class ToolbarButtonTestApi;
+}
+
 namespace ui {
 class MenuModel;
 }
@@ -71,6 +75,8 @@ class ToolbarButton : public views::LabelButton,
   virtual void ShowDropDownMenu(ui::MenuSourceType source_type);
 
  private:
+  friend test::ToolbarButtonTestApi;
+
   // Callback for MenuModelAdapter.
   void OnMenuClosed();