Inconsistent use of [x] close panel icon

chrome/browser/ui/gtk/extensions/bundle_installed_bubble_gtk.cc

 // Copyright (c) 2012 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/ui/gtk/extensions/bundle_installed_bubble_gtk.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 67 matching lines @@
   GtkWidget* text_column = gtk_vbox_new(FALSE, kTextColumnVerticalSpacing);
   gtk_box_pack_start(GTK_BOX(bubble_content), text_column, FALSE, FALSE, 0);
 
   InsertExtensionList(
       text_column, bundle, BundleInstaller::Item::STATE_INSTALLED);
   InsertExtensionList(text_column, bundle, BundleInstaller::Item::STATE_FAILED);
 
   // Close button
   GtkWidget* close_column = gtk_vbox_new(FALSE, 0);
   gtk_box_pack_start(GTK_BOX(bubble_content), close_column, FALSE, FALSE, 0);
-  close_button_.reset(CustomDrawButton::CloseButton(theme_provider));
+  close_button_.reset(CustomDrawButton::CloseButtonBubble(theme_provider));
   g_signal_connect(close_button_->widget(), "clicked",
                    G_CALLBACK(OnButtonClick), this);
   gtk_box_pack_start(GTK_BOX(close_column), close_button_->widget(),
       FALSE, FALSE, 0);
 
   gfx::Rect bounds = gtk_util::WidgetBounds(reference_widget);
 
   bubble_ = BubbleGtk::Show(reference_widget,
                             &bounds,
                             bubble_content,
@@ skipping 43 matching lines @@
   Release();  // Balanced in BundleInstalledBubbleGtk().
 }
 
 void BundleInstalledBubbleGtk::OnButtonClick(GtkWidget* button,
                                              BundleInstalledBubbleGtk* bubble) {
   if (button == bubble->close_button_->widget())
     bubble->bubble_->Close();
   else
     NOTREACHED();
 }