GTK: Use stock icons for bookmark folder and default favicon....

chrome/browser/gtk/bookmark_tree_model.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/bookmark_tree_model.h"
 
 #include <gtk/gtk.h>
 
 #include "app/resource_bundle.h"
 #include "base/string_util.h"
 #include "chrome/browser/bookmarks/bookmark_model.h"
 #include "chrome/browser/gtk/bookmark_utils_gtk.h"
 
 namespace {
 
 void AddSingleNodeToTreeStore(GtkTreeStore* store, const BookmarkNode* node,
                               GtkTreeIter *iter, GtkTreeIter* parent) {
   gtk_tree_store_append(store, iter, parent);
-  // TODO(estade): we should show the folder open icon when it's expanded.
+  // It would be easy to show a different icon when the folder is open (as they
+  // do on Windows, for example), using pixbuf-expander-closed and
+  // pixbuf-expander-open. Unfortunately there is no GTK_STOCK_OPEN_DIRECTORY
+  // (and indeed, Nautilus does not render an expanded directory any
+  // differently).
   gtk_tree_store_set(store, iter,
                      bookmark_utils::FOLDER_ICON,
-                     bookmark_utils::GetFolderIcon(),
+                     bookmark_utils::GetFolderIcon(true),
                      bookmark_utils::FOLDER_NAME,
                      WideToUTF8(node->GetTitle()).c_str(),
                      bookmark_utils::ITEM_ID, node->id(),
                      -1);
 }
 
 // Helper function for CommitTreeStoreDifferencesBetween() which recursively
 // merges changes back from a GtkTreeStore into a tree of BookmarkNodes. This
 // function only works on non-root nodes; our caller handles that special case.
 void RecursiveResolve(BookmarkModel* bb_model, const BookmarkNode* bb_node,
@@ skipping 156 matching lines @@
     ret_val = UTF8ToWide(utf8str);
     g_value_unset(&value);
   } else {
     NOTREACHED() << "Impossible type mismatch";
   }
 
   return ret_val;
 }
 
 }  // namespace bookmark_utils