GTK: more signal handler foolproofing.

chrome/browser/gtk/options/content_page_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/options/content_page_gtk.h"
 
 #include <string>
 
 #include "app/gtk_util.h"
 #include "app/l10n_util.h"
@@ skipping 27 matching lines @@
 
 // Background color for the status label when it's showing an error.
 static const GdkColor kSyncLabelErrorBgColor = GDK_COLOR_RGB(0xff, 0x9a, 0x9a);
 
 // Helper for WrapLabelAtAllocationHack.
 void OnLabelAllocate(GtkWidget* label, GtkAllocation* allocation) {
   gtk_widget_set_size_request(label, allocation->width, -1);
 
   // Disconnect ourselves.  Repeatedly resizing based on allocation causes
   // the dialog to become unshrinkable.
-  g_signal_handlers_disconnect_by_func(label, (void*)OnLabelAllocate,
-                                       NULL);
+  g_signal_handlers_disconnect_by_func(
+      label, reinterpret_cast<gpointer>(OnLabelAllocate), NULL);
 }
 
 // Set the label to use a request size equal to its initial allocation
 // size.  This causes the label to wrap at the width of the container
 // it is in, instead of at the default width.  This is called a hack
 // because GTK doesn't really work when a widget to make its size
 // request depend on its allocation.  It does, however, have the
 // intended effect of wrapping the label at the proper width.
 void WrapLabelAtAllocationHack(GtkWidget* label) {
   g_signal_connect(label, "size-allocate",
@@ skipping 558 matching lines @@
   sync_service_->ShowLoginDialog();
 }
 
 void ContentPageGtk::OnStopSyncDialogResponse(GtkWidget* widget, int response) {
   if (response == GTK_RESPONSE_ACCEPT) {
     sync_service_->DisableForUser();
     ProfileSyncService::SyncEvent(ProfileSyncService::STOP_FROM_OPTIONS);
   }
   gtk_widget_destroy(widget);
 }