Replace the virtual InfoBarDelegate::InfoBarClosed() function with a non-virtual one. This is a ...

chrome/browser/extensions/theme_installed_infobar_delegate.cc

 // Copyright (c) 2011 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.
 
 #include "chrome/browser/extensions/theme_installed_infobar_delegate.h"
 
 #include <string>
 
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/extensions/extension_service.h"
@@ skipping 51 matching lines @@
   }
 
   if (previous_using_native_theme_) {
     theme_service_->SetNativeTheme();
   } else {
     theme_service_->UseDefaultTheme();
   }
   return true;
 }
 
-void ThemeInstalledInfoBarDelegate::InfoBarClosed() {
-  delete this;
-}
-
 gfx::Image* ThemeInstalledInfoBarDelegate::GetIcon() const {
   // TODO(aa): Reply with the theme's icon, but this requires reading it
   // asynchronously from disk.
   return &ResourceBundle::GetSharedInstance().GetNativeImageNamed(
       IDR_INFOBAR_THEME);
 }
 
 ThemeInstalledInfoBarDelegate*
     ThemeInstalledInfoBarDelegate::AsThemePreviewInfobarDelegate() {
   return this;
@@ skipping 31 matching lines @@
       tab_contents_ = NULL;
       // Although it's not being used anymore, this delegate is never deleted.
       // It can not be deleted now because it is still needed if we
       // "undo" the theme change that triggered this notification
       // (when InfoBar::OnBackgroundExpose() is called). This will likely
       // be fixed when infobar delegate deletion is cleaned up for
       // http://crbug.com/62154.
     }
   }
 }