GTK: more signal handler foolproofing.

chrome/browser/gtk/gtk_theme_provider.h

 // Copyright (c) 2010 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_GTK_THEME_PROVIDER_H_
 #define CHROME_BROWSER_GTK_GTK_THEME_PROVIDER_H_
 
 #include <gtk/gtk.h>
 #include <map>
 #include <string>
@@ skipping 174 matching lines @@
   // their colors).
   GtkWidget* fake_window_;
   GtkWidget* fake_frame_;
   OwnedWidgetGtk fake_label_;
   OwnedWidgetGtk fake_entry_;
 
   // A list of all GtkChromeButton instances. We hold on to these to notify
   // them of theme changes.
   std::vector<GtkWidget*> chrome_buttons_;
 
+  // Tracks all the signals we have connected to on various widgets.
+  GtkSignalRegistrar signals_;
+
   // Tints and colors calculated by LoadGtkValues() that are given to the
   // caller while |use_gtk_| is true.
   ColorMap colors_;
   TintMap tints_;
 
   // Colors that we pass to WebKit. These are generated each time the theme
   // changes.
   SkColor focus_ring_color_;
   SkColor thumb_active_color_;
   SkColor thumb_inactive_color_;
@@ skipping 18 matching lines @@
 
   // The default folder icon and default bookmark icon for the GTK theme.
   // These are static because the system can only have one theme at a time.
   // They are cached when they are requested the first time, and cleared when
   // the system theme changes.
   static GdkPixbuf* default_folder_icon_;
   static GdkPixbuf* default_bookmark_icon_;
 };
 
 #endif  // CHROME_BROWSER_GTK_GTK_THEME_PROVIDER_H_