Convert HtmlDialogUIDelegate::GetDialogTitle() to string16.

chrome/browser/ui/views/html_dialog_view.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_VIEWS_HTML_DIALOG_VIEW_H_
 #define CHROME_BROWSER_UI_VIEWS_HTML_DIALOG_VIEW_H_
 #pragma once
 
 #include <string>
 
@@ skipping 47 matching lines @@
   virtual std::wstring GetWindowTitle() const OVERRIDE;
   virtual void WindowClosing() OVERRIDE;
   virtual views::View* GetContentsView() OVERRIDE;
   virtual views::View* GetInitiallyFocusedView() OVERRIDE;
   virtual bool ShouldShowWindowTitle() const OVERRIDE;
   virtual views::Widget* GetWidget() OVERRIDE;
   virtual const views::Widget* GetWidget() const OVERRIDE;
 
   // Overridden from HtmlDialogUIDelegate:
   virtual bool IsDialogModal() const OVERRIDE;
-  virtual std::wstring GetDialogTitle() const OVERRIDE;
+  virtual string16 GetDialogTitle() const OVERRIDE;
   virtual GURL GetDialogContentURL() const OVERRIDE;
   virtual void GetWebUIMessageHandlers(
       std::vector<WebUIMessageHandler*>* handlers) const OVERRIDE;
   virtual void GetDialogSize(gfx::Size* size) const OVERRIDE;
   virtual std::string GetDialogArgs() const OVERRIDE;
   virtual void OnWindowClosed() OVERRIDE;
   virtual void OnDialogClosed(const std::string& json_retval) OVERRIDE;
   virtual void OnCloseContents(TabContents* source, bool* out_close_dialog)
       OVERRIDE;
   virtual bool ShouldShowDialogTitle() const OVERRIDE;
@@ skipping 35 matching lines @@
   // closing) we delegate to the creator of this view, which we keep track of
   // using this variable.
   HtmlDialogUIDelegate* delegate_;
 
   NotificationRegistrar notification_registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(HtmlDialogView);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_HTML_DIALOG_VIEW_H_