Cleanup: Use base namespace in printing/.

printing/backend/win_helper.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 PRINTING_BACKEND_WIN_HELPER_H_
 #define PRINTING_BACKEND_WIN_HELPER_H_
 
 #include <objidl.h>
 #include <winspool.h>
 #include <prntvpt.h>
@@ skipping 54 matching lines @@
 // Wrapper class to wrap the XPS APIs (PTxxx APIs). This is needed because these
 // APIs are not available by default on XP. We could delayload prntvpt.dll but
 // this would mean having to add that to every binary that links with
 // printing.lib (which is a LOT of binaries). So choosing the GetProcAddress
 // route instead).
 class PRINTING_EXPORT XPSModule {
  public:
   // All the other methods can ONLY be called after a successful call to Init.
   // Init can be called many times and by multiple threads.
   static bool Init();
-  static HRESULT OpenProvider(const string16& printer_name,
+  static HRESULT OpenProvider(const base::string16& printer_name,
                               DWORD version,
                               HPTPROVIDER* provider);
   static HRESULT GetPrintCapabilities(HPTPROVIDER provider,
                                       IStream* print_ticket,
                                       IStream* capabilities,
                                       BSTR* error_message);
   static HRESULT ConvertDevModeToPrintTicket(HPTPROVIDER provider,
                                              ULONG devmode_size_in_bytes,
                                              PDEVMODE devmode,
                                              EPrintTicketScope scope,
@@ skipping 57 matching lines @@
 };
 
 PRINTING_EXPORT bool InitBasicPrinterInfo(HANDLE printer,
                                           PrinterBasicInfo* printer_info);
 
 PRINTING_EXPORT std::string GetDriverInfo(HANDLE printer);
 
 }  // namespace printing
 
 #endif  // PRINTING_BACKEND_WIN_HELPER_H_