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

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

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_UI_VIEWS_TOOLBAR_TOOLBAR_BUTTON_H_
 #define CHROME_BROWSER_UI_VIEWS_TOOLBAR_TOOLBAR_BUTTON_H_
 
 #include <memory>
 
 #include "base/macros.h"
 #include "ui/gfx/geometry/point.h"
 #include "ui/views/context_menu_controller.h"
 #include "ui/views/controls/button/button.h"
 #include "ui/views/controls/button/label_button.h"
 
 class Profile;
 
+namespace test {
+class ToolbarButtonTestApi;
+}
+
 namespace ui {
 class MenuModel;
 }
 
 namespace views {
 class InkDropDelegate;
 class MenuModelAdapter;
 class MenuRunner;
 }
 
@@ skipping 36 matching lines @@
                               ui::MenuSourceType source_type) override;
 
  protected:
   // Returns if menu should be shown. Override this to change default behavior.
   virtual bool ShouldShowMenu();
 
   // Function to show the dropdown menu.
   virtual void ShowDropDownMenu(ui::MenuSourceType source_type);
 
  private:
+  friend test::ToolbarButtonTestApi;
+
   // Callback for MenuModelAdapter.
   void OnMenuClosed();
 
   // views::LabelButton:
   const char* GetClassName() const override;
 
   // The associated profile. The browser theme affects rendering.
   Profile* profile_;
 
   // The model that populates the attached menu.
@@ skipping 14 matching lines @@
   // Controls the visual feedback for the button state.
   std::unique_ptr<views::InkDropDelegate> ink_drop_delegate_;
 
   // A factory for tasks that show the dropdown context menu for the button.
   base::WeakPtrFactory<ToolbarButton> show_menu_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ToolbarButton);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_TOOLBAR_TOOLBAR_BUTTON_H_