Actually delete databases in CookiesTreeModel.

chrome/browser/views/options/cookies_view.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/views/options/cookies_view.h"
 
 #include <algorithm>
 
 #include "app/gfx/canvas.h"
 #include "app/gfx/color_utils.h"
@@ skipping 330 matching lines @@
 }
 
 void CookiesView::UpdateRemoveButtonsState() {
   remove_button_->SetEnabled(cookies_tree_model_->GetRoot()->
       GetTotalNodeCount() > 1);
   remove_all_button_->SetEnabled(cookies_tree_model_->GetRoot()->
       GetTotalNodeCount() > 1);
 }
 
 void CookiesView::UpdateVisibleDetailedInfo(views::View* view) {
-  view->SetVisible(true);
-  if (view != cookie_info_view_)
-    cookie_info_view_->SetVisible(false);
-  if (view != database_info_view_)
-    database_info_view_->SetVisible(false);
-  if (view != local_storage_info_view_)
-    local_storage_info_view_->SetVisible(false);
+  cookie_info_view_->SetVisible(view == cookie_info_view_);
+  database_info_view_->SetVisible(view == database_info_view_);
+  local_storage_info_view_->SetVisible(view == local_storage_info_view_);
 }