Replace string16 with base::string16.

chrome/browser/chromeos/login/captive_portal_view.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_CHROMEOS_LOGIN_CAPTIVE_PORTAL_VIEW_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_CAPTIVE_PORTAL_VIEW_H_
 
 #include <string>
 #include "chrome/browser/chromeos/login/simple_web_view_dialog.h"
 
 namespace chromeos {
 
 class CaptivePortalWindowProxy;
 
 class CaptivePortalView : public SimpleWebViewDialog {
  public:
   CaptivePortalView(Profile* profile, CaptivePortalWindowProxy* proxy);
   virtual ~CaptivePortalView();
 
   // Starts loading.
   void StartLoad();
 
   // Overridden from views::WidgetDelegate:
   virtual bool CanResize() const OVERRIDE;
   virtual ui::ModalType GetModalType() const OVERRIDE;
-  virtual string16 GetWindowTitle() const OVERRIDE;
+  virtual base::string16 GetWindowTitle() const OVERRIDE;
   virtual bool ShouldShowWindowTitle() const OVERRIDE;
   virtual views::NonClientFrameView* CreateNonClientFrameView(
       views::Widget* widget) OVERRIDE;
 
   // Overridden from content::WebContentsDelegate:
   virtual void NavigationStateChanged(const content::WebContents* source,
                                       unsigned changed_flags) OVERRIDE;
   virtual void LoadingStateChanged(content::WebContents* source) OVERRIDE;
 
  private:
   // Contains CaptivePortalWindowProxy to be notified when redirection state is
   // resolved.
   CaptivePortalWindowProxy* proxy_;
 
   bool redirected_;
 
   DISALLOW_COPY_AND_ASSIGN(CaptivePortalView);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_CAPTIVE_PORTAL_VIEW_H_