Media Galleries: Update tooltips in permission dialogs when galleries change.

chrome/browser/ui/gtk/extensions/media_galleries_dialog_gtk.cc

Index: chrome/browser/ui/gtk/extensions/media_galleries_dialog_gtk.cc
===================================================================
--- chrome/browser/ui/gtk/extensions/media_galleries_dialog_gtk.cc	(revision 179687)
+++ chrome/browser/ui/gtk/extensions/media_galleries_dialog_gtk.cc	(working copy)
@@ -101,14 +101,15 @@
     widget = iter->second;
   } else {
     widget = gtk_check_button_new();
-    gtk_widget_set_tooltip_text(widget, UTF16ToUTF8(
-        MediaGalleriesDialogController::GetGalleryTooltip(*gallery)).c_str());
     g_signal_connect(widget, "toggled", G_CALLBACK(OnToggledThunk), this);
     gtk_box_pack_start(GTK_BOX(checkbox_container_), widget, FALSE, FALSE, 0);
     gtk_widget_show(widget);
     checkbox_map_[gallery] = widget;
   }
 
+  gtk_widget_set_tooltip_text(widget, UTF16ToUTF8(
+      MediaGalleriesDialogController::GetGalleryTooltip(*gallery)).c_str());
+
   base::AutoReset<bool> reset(&ignore_toggles_, true);
   gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(widget), permitted);
   std::string label_text = UTF16ToUTF8(
@@ -135,7 +136,7 @@
   if (ignore_toggles_)
     return;
 
-  for (CheckboxMap::iterator iter = checkbox_map_.begin();
+  for (CheckboxMap::const_iterator iter = checkbox_map_.begin();
        iter != checkbox_map_.end(); ++iter) {
     if (iter->second == widget) {
       controller_->DidToggleGallery(