Convert infobar APIs to UTF-16.

chrome/browser/blocked_plugin_manager.h

 // Copyright (c) 2010 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_BLOCKED_PLUGIN_MANAGER_H_
 #define CHROME_BROWSER_BLOCKED_PLUGIN_MANAGER_H_
 
 #include "chrome/browser/renderer_host/render_view_host_delegate.h"
 #include "chrome/browser/tab_contents/infobar_delegate.h"
 
 class TabContents;
 
 class BlockedPluginManager : public RenderViewHostDelegate::BlockedPlugin,
                              public ConfirmInfoBarDelegate {
  public:
   explicit BlockedPluginManager(TabContents* tab_contents);
 
   virtual void OnNonSandboxedPluginBlocked(const string16& name);
   virtual void OnBlockedPluginLoaded();
 
   // ConfirmInfoBarDelegate methods
   virtual int GetButtons() const;
-  virtual std::wstring GetButtonLabel(InfoBarButton button) const;
-  virtual std::wstring GetMessageText() const;
-  virtual std::wstring GetLinkText();
+  virtual string16 GetButtonLabel(InfoBarButton button) const;
+  virtual string16 GetMessageText() const;
+  virtual string16 GetLinkText();
   virtual SkBitmap* GetIcon() const;
   virtual bool Accept();
   virtual bool LinkClicked(WindowOpenDisposition disposition);
 
  private:
   // Owns us.
   TabContents* tab_contents_;
   string16 name_;
 };
 
 #endif  // CHROME_BROWSER_BLOCKED_PLUGIN_MANAGER_H_