Replace string16 with base::string16.

chrome/browser/chromeos/external_protocol_dialog.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_EXTERNAL_PROTOCOL_DIALOG_H_
 #define CHROME_BROWSER_CHROMEOS_EXTERNAL_PROTOCOL_DIALOG_H_
 
 #include <string>
 
 #include "base/strings/string16.h"
@@ skipping 15 matching lines @@
 // this dialog simply says it is not supported.
 class ExternalProtocolDialog : public views::DialogDelegate {
  public:
   // RunExternalProtocolDialog calls this private constructor.
   ExternalProtocolDialog(content::WebContents* web_contents, const GURL& url);
 
   virtual ~ExternalProtocolDialog();
 
   // views::DialogDelegate Methods:
   virtual int GetDialogButtons() const OVERRIDE;
-  virtual string16 GetDialogButtonLabel(ui::DialogButton button) const OVERRIDE;
-  virtual string16 GetWindowTitle() const OVERRIDE;
+  virtual base::string16 GetDialogButtonLabel(
+      ui::DialogButton button) const OVERRIDE;
+  virtual base::string16 GetWindowTitle() const OVERRIDE;
   virtual void DeleteDelegate() OVERRIDE;
   virtual bool Accept() OVERRIDE;
   virtual views::View* GetContentsView() OVERRIDE;
 
   // views::WidgetDelegate Methods:
   virtual const views::Widget* GetWidget() const OVERRIDE;
   virtual views::Widget* GetWidget() OVERRIDE;
 
  private:
   // The message box view whose commands we handle.
   views::MessageBoxView* message_box_view_;
 
   // The time at which this dialog was created.
   base::TimeTicks creation_time_;
 
   // The scheme of the url.
   std::string scheme_;
 
   DISALLOW_COPY_AND_ASSIGN(ExternalProtocolDialog);
 };
 
 #endif  // CHROME_BROWSER_CHROMEOS_EXTERNAL_PROTOCOL_DIALOG_H_