Add base:: namespace to string16 in chrome/browser/chromeos.

chrome/browser/chromeos/charger_replace/charger_replacement_dialog.h

 // Copyright (c) 2013 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_CHARGER_REPLACE_CHARGER_REPLACEMENT_DIALOG_H_
 #define CHROME_BROWSER_CHROMEOS_CHARGER_REPLACE_CHARGER_REPLACEMENT_DIALOG_H_
 
 #include "ui/gfx/native_widget_types.h"
 #include "ui/web_dialogs/web_dialog_delegate.h"
 
 namespace chromeos {
 
 class ChargerReplacementHandler;
 
 // Spring charger replacement dialog.
 class ChargerReplacementDialog : public ui::WebDialogDelegate {
  public:
   explicit ChargerReplacementDialog(gfx::NativeWindow parent_window);
   virtual ~ChargerReplacementDialog();
 
   // True if ChargerReplacementDialog should be shown.
   static bool ShouldShowDialog();
 
   void Show();
   void set_can_close(bool can_close) { can_close_ = can_close; }
 
  private:
   // ui::WebDialogDelegate implementation.
   virtual ui::ModalType GetDialogModalType() const OVERRIDE;
-  virtual string16 GetDialogTitle() const OVERRIDE;
+  virtual base::string16 GetDialogTitle() const OVERRIDE;
   virtual GURL GetDialogContentURL() const OVERRIDE;
   virtual void GetWebUIMessageHandlers(
       std::vector<content::WebUIMessageHandler*>* handlers) const OVERRIDE;
   virtual void GetMinimumDialogSize(gfx::Size* size) const OVERRIDE;
   virtual void GetDialogSize(gfx::Size* size) const OVERRIDE;
   virtual std::string GetDialogArgs() const OVERRIDE;
   virtual bool CanCloseDialog() const OVERRIDE;
   // NOTE: This function deletes this object at the end.
   virtual void OnDialogClosed(const std::string& json_retval) OVERRIDE;
   virtual void OnCloseContents(
       content::WebContents* source, bool* out_close_dialog) OVERRIDE;
   virtual bool ShouldShowDialogTitle() const OVERRIDE;
   virtual bool HandleContextMenu(
       const content::ContextMenuParams& params) OVERRIDE;
 
   static bool is_window_visible_;
 
   gfx::NativeWindow parent_window_;
   bool can_close_;
   ChargerReplacementHandler* charger_replacement_handler_;
 
   DISALLOW_COPY_AND_ASSIGN(ChargerReplacementDialog);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_CHARGER_REPLACE_CHARGER_REPLACEMENT_DIALOG_H_