Convert HtmlDialogUIDelegate::GetDialogTitle() to string16.

chrome/browser/ui/webui/collected_cookies_ui_delegate.cc

 // Copyright (c) 2011 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/ui/webui/collected_cookies_ui_delegate.h"
 
 #include "base/message_loop.h"
 #include "base/string_util.h"
 #include "base/values.h"
 #include "chrome/browser/content_settings/host_content_settings_map.h"
@@ skipping 152 matching lines @@
   wrapper->profile()->GetChromeURLDataManager()->AddDataSource(source);
 }
 
 CollectedCookiesUIDelegate::~CollectedCookiesUIDelegate() {
 }
 
 bool CollectedCookiesUIDelegate::IsDialogModal() const {
   return false;
 }
 
-std::wstring CollectedCookiesUIDelegate::GetDialogTitle() const {
-  return std::wstring();
+string16 CollectedCookiesUIDelegate::GetDialogTitle() const {
+  return string16();
 }
 
 GURL CollectedCookiesUIDelegate::GetDialogContentURL() const {
   return GURL(chrome::kChromeUICollectedCookiesURL);
 }
 
 void CollectedCookiesUIDelegate::GetWebUIMessageHandlers(
     std::vector<WebUIMessageHandler*>* handlers) const {
   const WebUIMessageHandler* handler = this;
   handlers->push_back(const_cast<WebUIMessageHandler*>(handler));
@@ skipping 98 matching lines @@
   if (!args->GetString(0, &node_path))
     return;
 
   CookieTreeOriginNode* origin_node = GetOriginNode(
       blocked_cookies_tree_model_.get(), node_path);
   if (!origin_node)
     return;
 
   AddContentException(origin_node, CONTENT_SETTING_SESSION_ONLY);
 }