Make bookmark bar folder buttons look active so long as the menu is open....

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 "base/gfx/gtk_util.h"
 #include "chrome/browser/gtk/nine_box.h"
 
@@ skipping 21 matching lines @@
   // If true, we use images provided by the theme instead of GTK's default
   // button rendering.
   gboolean use_gtk_rendering;
 };
 
 G_DEFINE_TYPE(GtkChromeButton, gtk_chrome_button, GTK_TYPE_BUTTON)
 static gboolean gtk_chrome_button_expose(GtkWidget* widget,
                                          GdkEventExpose* event);
 
 static void gtk_chrome_button_class_init(GtkChromeButtonClass* button_class) {
+  gtk_rc_parse_string(
+      "style \"chrome-button\" {"
+      "  GtkButton::child-displacement-x = 0"
+      "  GtkButton::child-displacement-y = 0"
+      "}"
+      "widget \"*chrome-button\" style \"chrome-button\"");
+
   GObjectClass* gobject_class = G_OBJECT_CLASS(button_class);
   GtkWidgetClass* widget_class = reinterpret_cast<GtkWidgetClass*>(button_class);
   widget_class->expose_event = gtk_chrome_button_expose;
 
   g_nine_box_prelight = new NineBox(
       IDR_TEXTBUTTON_TOP_LEFT_H,
       IDR_TEXTBUTTON_TOP_H,
       IDR_TEXTBUTTON_TOP_RIGHT_H,
       IDR_TEXTBUTTON_LEFT_H,
       IDR_TEXTBUTTON_CENTER_H,
@@ skipping 14 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;
   priv->use_gtk_rendering = FALSE;
 
+  gtk_widget_set_name(GTK_WIDGET(button), "chrome-button");
   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;
@@ skipping 54 matching lines @@
 }
 
 void gtk_chrome_button_set_use_gtk_rendering(GtkChromeButton* button,
                                              gboolean value) {
   g_return_if_fail(GTK_IS_CHROME_BUTTON(button));
   GtkChromeButtonPrivate *priv = GTK_CHROME_BUTTON_GET_PRIVATE(button);
   priv->use_gtk_rendering = value;
 }
 
 G_END_DECLS