Paint a focus indication on LinkButtonGtk buttons....

chrome/browser/gtk/gtk_chrome_button.cc

 // 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.
 
 #include "chrome/browser/gtk/gtk_chrome_button.h"
 
 #include "base/basictypes.h"
 #include "chrome/browser/gtk/nine_box.h"
 
 #include "grit/app_resources.h"
@@ skipping 51 matching lines @@
       IDR_TEXTBUTTON_BOTTOM_RIGHT_P);
 
   g_type_class_add_private(gobject_class, sizeof(GtkChromeButtonPrivate));
 }
 
 static void gtk_chrome_button_init(GtkChromeButton* button) {
   GtkChromeButtonPrivate *priv = GTK_CHROME_BUTTON_GET_PRIVATE(button);
   priv->paint_state = -1;
 
   gtk_widget_set_app_paintable(GTK_WIDGET(button), TRUE);
+
+  GTK_WIDGET_UNSET_FLAGS(button, GTK_CAN_FOCUS);
 }
 
 static gboolean gtk_chrome_button_expose(GtkWidget* widget,
                                          GdkEventExpose* event) {
   GtkChromeButtonPrivate *priv = GTK_CHROME_BUTTON_GET_PRIVATE(widget);
   int paint_state = priv->paint_state < 0 ?
                     GTK_WIDGET_STATE(widget) : priv->paint_state;
 
   NineBox* nine_box = NULL;
   if (paint_state == GTK_STATE_PRELIGHT)
@@ skipping 30 matching lines @@
   g_return_if_fail(GTK_IS_CHROME_BUTTON(button));
 
   GtkChromeButtonPrivate *priv = GTK_CHROME_BUTTON_GET_PRIVATE(button);
   priv->paint_state = -1;
 
   gtk_widget_queue_draw(GTK_WIDGET(button));
 }
 
 G_END_DECLS