[Garbled Text][Infobar] Adding infobar to suggest turning on encoding detection.

chrome/browser/infobars/infobar_delegate.h

 // Copyright (c) 2012 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_INFOBARS_INFOBAR_DELEGATE_H_
 #define CHROME_BROWSER_INFOBARS_INFOBAR_DELEGATE_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "base/string16.h"
 #include "webkit/glue/window_open_disposition.h"
 
 class ConfirmInfoBarDelegate;
 class ExtensionInfoBarDelegate;
+class GarbledTextInfoBarDelegate;
 class InfoBar;
 class InfoBarTabHelper;
 class InsecureContentInfoBarDelegate;
 class LinkInfoBarDelegate;
 class PluginInstallerInfoBarDelegate;
 class RegisterProtocolHandlerInfoBarDelegate;
 class ThemeInstalledInfoBarDelegate;
 class TranslateInfoBarDelegate;
 
 namespace gfx {
@@ skipping 54 matching lines @@
   // NULL, no icon is shown.
   virtual gfx::Image* GetIcon() const;
 
   // Returns the type of the infobar.  The type determines the appearance (such
   // as background color) of the infobar.
   virtual Type GetInfoBarType() const;
 
   // Type-checking downcast routines:
   virtual ConfirmInfoBarDelegate* AsConfirmInfoBarDelegate();
   virtual ExtensionInfoBarDelegate* AsExtensionInfoBarDelegate();
+  virtual GarbledTextInfoBarDelegate* AsGarbledTextInfoBarDelegate();
   virtual InsecureContentInfoBarDelegate* AsInsecureContentInfoBarDelegate();
   virtual LinkInfoBarDelegate* AsLinkInfoBarDelegate();
   virtual PluginInstallerInfoBarDelegate* AsPluginInstallerInfoBarDelegate();
   virtual RegisterProtocolHandlerInfoBarDelegate*
       AsRegisterProtocolHandlerInfoBarDelegate();
   virtual ThemeInstalledInfoBarDelegate* AsThemePreviewInfobarDelegate();
   virtual TranslateInfoBarDelegate* AsTranslateInfoBarDelegate();
 
  protected:
   // If |contents| is non-NULL, its active entry's unique ID will be stored
@@ skipping 18 matching lines @@
   // opened for. Used to help expire on navigations.
   int contents_unique_id_;
 
   // TODO(pkasting): Remove.
   InfoBarTabHelper* owner_;
 
   DISALLOW_COPY_AND_ASSIGN(InfoBarDelegate);
 };
 
 #endif  // CHROME_BROWSER_INFOBARS_INFOBAR_DELEGATE_H_