Remove null link from "welcome to tips" default suggestion. Also make some h...

chrome/browser/dom_ui/tips_handler.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 "base/string_util.h"
 #include "base/values.h"
 #include "chrome/browser/dom_ui/tips_handler.h"
 #include "chrome/browser/profile.h"
 #include "chrome/browser/web_resource/web_resource_service.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/web_resource/web_resource_unpacker.h"
 #include "chrome/common/url_constants.h"
 #include "googleurl/src/gurl.h"
 
 namespace {
 
   // TODO(mrc): l10n
   // This title should only appear the very first time Chrome is run with
   // web resources enabled; otherwise the cache should be populated.
   static const wchar_t* kTipsTitleAtStartup =
       L"Tips and recommendations to help you discover interesting websites.";
 }
 
 DOMMessageHandler* TipsHandler::Attach(DOMUI* dom_ui) {
+  dom_ui_ = dom_ui;
   tips_cache_ = dom_ui_->GetProfile()->GetPrefs()->
       GetDictionary(prefs::kNTPTipsCache);
-  return DOMMessageHandler::Attach(dom_ui);  
+  return DOMMessageHandler::Attach(dom_ui);
 }
 
 void TipsHandler::RegisterMessages() {
   dom_ui_->RegisterMessageCallback("getTips",
       NewCallback(this, &TipsHandler::HandleGetTips));
 }
 
 void TipsHandler::HandleGetTips(const Value* content) {
   // List containing the tips to be displayed.
   ListValue list_value;
@@ skipping 43 matching lines @@
   prefs->RegisterStringPref(prefs::kNTPTipsServer,
                             WebResourceService::kDefaultResourceServer);
 }
 
 bool TipsHandler::IsValidURL(const std::wstring& url_string) {
   GURL url(WideToUTF8(url_string));
   return !url.is_empty() && (url.SchemeIs(chrome::kHttpScheme) ||
                              url.SchemeIs(chrome::kHttpsScheme));
 }