Add an option to tree_view for whether to show lines from the root node...

chrome/browser/views/options/cookies_view.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/views/options/cookies_view.h"
 
 #include <algorithm>
 
 #include "app/gfx/canvas.h"
 #include "app/gfx/color_utils.h"
@@ skipping 397 matching lines @@
   const int single_column_layout_id = 1;
   column_set = layout->AddColumnSet(single_column_layout_id);
   column_set->AddColumn(GridLayout::FILL, GridLayout::FILL, 1,
                         GridLayout::USE_PREF, 0, 0);
 
   layout->StartRow(0, single_column_layout_id);
   layout->AddView(description_label_);
 
   layout->AddPaddingRow(0, kRelatedControlVerticalSpacing);
   layout->StartRow(1, single_column_layout_id);
+  cookies_tree_->set_lines_at_root(true);
+  cookies_tree_->set_auto_expand_children(true);
   layout->AddView(cookies_tree_);
-  cookies_tree_->ExpandAll();
 
   cookies_tree_->SetController(this);
 
   layout->AddPaddingRow(0, kRelatedControlVerticalSpacing);
   layout->StartRow(0, single_column_layout_id);
   layout->AddView(info_view_);
 
   // Add the Remove/Remove All buttons to the ClientView
   View* parent = GetParent();
   parent->AddChildView(remove_button_);
   parent->AddChildView(remove_all_button_);
   if (!cookies_tree_model_.get()->GetRoot()->GetChildCount())
     UpdateForEmptyState();
 }
 
 void CookiesView::UpdateForEmptyState() {
   info_view_->ClearCookieDisplay();
   remove_button_->SetEnabled(false);
   remove_all_button_->SetEnabled(false);
 }