Paint a focus indication on LinkButtonGtk buttons....

chrome/browser/gtk/custom_button.h

 // Copyright (c) 2009 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_GTK_CUSTOM_BUTTON_H_
 #define CHROME_BROWSER_GTK_CUSTOM_BUTTON_H_
 
 #include <gtk/gtk.h>
 
 #include <string>
@@ skipping 59 matching lines @@
 
   int width() const { return widget_.get()->allocation.width; }
 
   // Set the state to draw. We will paint the widget as if it were in this
   // state.
   void SetPaintOverride(GtkStateType state);
 
   // Resume normal drawing of the widget's state.
   void UnsetPaintOverride();
 
-  // This is a convenience function for creating a widget that closes
-  // a bar (find bar, download shelf, info bars). The button will be packed in
-  // |hbox|.
-  // The caller is responsible for destroying the returned CustomDrawButton.
-  static CustomDrawButton* AddBarCloseButton(GtkWidget* hbox, int padding);
+  // Returns a standard close button.
+  static CustomDrawButton* CloseButton();
 
  private:
   // Callback for expose, used to draw the custom graphics.
   static gboolean OnExpose(GtkWidget* widget,
                            GdkEventExpose* e,
                            CustomDrawButton* obj);
 
   // The actual button widget.
   OwnedWidgetGtk widget_;
 
   CustomDrawButtonBase button_base_;
 
   DISALLOW_COPY_AND_ASSIGN(CustomDrawButton);
 };
 
 #endif  // CHROME_BROWSER_GTK_CUSTOM_BUTTON_H_