Fixes stale hover or ink ripple visuals when dragging over extension buttons

chrome/browser/ui/views/toolbar/toolbar_action_view.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_ACTION_VIEW_H_
 #define CHROME_BROWSER_UI_VIEWS_TOOLBAR_TOOLBAR_ACTION_VIEW_H_
 
 #include "base/callback.h"
 #include "chrome/browser/ui/views/toolbar/toolbar_action_view_delegate_views.h"
 #include "content/public/browser/notification_observer.h"
@@ skipping 100 matching lines @@
   // The toolbar action opening the menu will be passed in.
   static void set_context_menu_callback_for_testing(
       ContextMenuCallback* callback);
 
   views::MenuItemView* menu_for_testing() { return menu_; }
 
  private:
   // views::MenuButton:
   gfx::Size GetPreferredSize() const override;
   bool OnMousePressed(const ui::MouseEvent& event) override;
+  void OnMouseCaptureLost() override;
   void OnGestureEvent(ui::GestureEvent* event) override;
   void OnDragDone() override;
   void ViewHierarchyChanged(
       const ViewHierarchyChangedDetails& details) override;
 
   // ToolbarActionViewDelegateViews:
   views::View* GetAsView() override;
   views::FocusManager* GetFocusManagerForAccelerator() override;
   views::View* GetReferenceViewForPopup() override;
   bool IsMenuRunning() const override;
@@ skipping 53 matching lines @@
   content::NotificationRegistrar registrar_;
 
   scoped_ptr<views::InkDropDelegate> ink_drop_delegate_;
 
   base::WeakPtrFactory<ToolbarActionView> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ToolbarActionView);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_TOOLBAR_TOOLBAR_ACTION_VIEW_H_