Convert HtmlDialogUIDelegate::GetDialogTitle() to string16.

chrome/browser/chromeos/sim_dialog_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/chromeos/sim_dialog_delegate.h"
 
 #include "base/stringprintf.h"
 #include "chrome/browser/chromeos/frame/bubble_window.h"
 #include "chrome/browser/chromeos/login/user_manager.h"
 #include "chrome/browser/profiles/profile_manager.h"
@@ skipping 53 matching lines @@
     : dialog_mode_(dialog_mode) {
 }
 
 SimDialogDelegate::~SimDialogDelegate() {
 }
 
 bool SimDialogDelegate::IsDialogModal() const {
   return true;
 }
 
-std::wstring SimDialogDelegate::GetDialogTitle() const {
-  return std::wstring();
+string16 SimDialogDelegate::GetDialogTitle() const {
+  return string16();
 }
 
 GURL SimDialogDelegate::GetDialogContentURL() const {
   if (dialog_mode_ == SIM_DIALOG_UNLOCK) {
     std::string url_string(chrome::kChromeUISimUnlockURL);
     return GURL(url_string);
   } else {
     std::string mode_value;
     if (dialog_mode_ == SIM_DIALOG_CHANGE_PIN)
       mode_value = kSimDialogChangePinMode;
@@ skipping 34 matching lines @@
 bool SimDialogDelegate::ShouldShowDialogTitle() const {
   return false;
 }
 
 bool SimDialogDelegate::HandleContextMenu(const ContextMenuParams& params) {
   // Disable context menu.
   return true;
 }
 
 }  // namespace chromeos