Cleanup: Use base namespace in printing/.

printing/printing_context_no_system_dialog.h

 // Copyright (c) 2011 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 PRINTING_PRINTING_CONTEXT_NO_SYSTEM_DIALOG_H_
 #define PRINTING_PRINTING_CONTEXT_NO_SYSTEM_DIALOG_H_
 
 #include <string>
 
 #include "printing/printing_context.h"
@@ skipping 13 matching lines @@
   virtual void AskUserForSettings(
       gfx::NativeView parent_view,
       int max_pages,
       bool has_selection,
       const PrintSettingsCallback& callback) OVERRIDE;
   virtual Result UseDefaultSettings() OVERRIDE;
   virtual Result UpdatePrinterSettings(
       const base::DictionaryValue& job_settings,
       const PageRanges& ranges) OVERRIDE;
   virtual Result InitWithSettings(const PrintSettings& settings) OVERRIDE;
-  virtual Result NewDocument(const string16& document_name) OVERRIDE;
+  virtual Result NewDocument(const base::string16& document_name) OVERRIDE;
   virtual Result NewPage() OVERRIDE;
   virtual Result PageDone() OVERRIDE;
   virtual Result DocumentDone() OVERRIDE;
   virtual void Cancel() OVERRIDE;
   virtual void ReleaseContext() OVERRIDE;
   virtual gfx::NativeDrawingContext context() const OVERRIDE;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(PrintingContextNoSystemDialog);
 };
 
 }  // namespace printing
 
 #endif  // PRINTING_PRINTING_CONTEXT_NO_SYSTEM_DIALOG_H_