Remove support for background masks. These are no longer necessary in the ne...

chrome/browser/gtk/browser_toolbar_gtk.cc

 // 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.
 
 #include "chrome/browser/gtk/browser_toolbar_gtk.h"
 
 #include <gdk/gdkkeysyms.h>
 #include <gtk/gtk.h>
 #include <X11/XF86keysym.h>
 
@@ skipping 158 matching lines @@
                      FALSE, 0);
 
   gtk_box_pack_start(GTK_BOX(toolbar_left_), back_forward_hbox_, FALSE,
                      FALSE, kToolbarWidgetSpacing);
 
   reload_.reset(new ReloadButtonGtk(location_bar_.get(), browser_));
   gtk_box_pack_start(GTK_BOX(toolbar_left_), reload_->widget(), FALSE, FALSE,
                      0);
 
   home_.reset(new CustomDrawButton(GtkThemeProvider::GetFrom(profile_),
-                                   IDR_HOME, IDR_HOME_P, IDR_HOME_H, 0,
-                                   IDR_BUTTON_MASK, GTK_STOCK_HOME,
-                                   GTK_ICON_SIZE_SMALL_TOOLBAR));
+      IDR_HOME, IDR_HOME_P, IDR_HOME_H, 0, GTK_STOCK_HOME,
+      GTK_ICON_SIZE_SMALL_TOOLBAR));
   gtk_widget_set_tooltip_text(home_->widget(),
       l10n_util::GetStringUTF8(IDS_TOOLTIP_HOME).c_str());
   g_signal_connect(home_->widget(), "clicked",
                    G_CALLBACK(OnButtonClickThunk), this);
   gtk_box_pack_start(GTK_BOX(toolbar_left_), home_->widget(), FALSE, FALSE,
                      kToolbarWidgetSpacing);
   gtk_util::SetButtonTriggersNavigation(home_->widget());
 
   gtk_box_pack_start(GTK_BOX(toolbar_), toolbar_left_, FALSE, FALSE, 0);
 
@@ skipping 537 matching lines @@
 
   return FALSE;
 }
 
 bool BrowserToolbarGtk::UpgradeAnimationIsFaded() {
   return upgrade_reminder_animation_.cycles_remaining() > 0 &&
       // This funky looking math makes the badge throb for 2 seconds once
       // every 8 seconds.
       ((upgrade_reminder_animation_.cycles_remaining() - 1) / 2) % 4 == 0;
 }