Printing: Convert several wstrings to string16.

printing/printing_context.h

 // Copyright (c) 2010 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_H_
 #define PRINTING_PRINTING_CONTEXT_H_
 
 #include "build/build_config.h"
 
 #if defined(OS_WIN)
 #include <ocidl.h>
 #include <commdlg.h>
 #endif
 
 #include <string>
 
 #include "base/basictypes.h"
 #if !(defined(OS_WIN) || defined(OS_MACOSX))
 // TODO(port) Remove after implementing PrintingContext::context()
 #include "base/logging.h"
 #endif
 #include "base/scoped_ptr.h"
+#include "base/string16.h"
 #include "gfx/native_widget_types.h"
 #include "printing/print_settings.h"
 
 #if defined(OS_MACOSX)
 #include "base/scoped_cftyperef.h"
 #ifdef __OBJC__
 @class NSPrintInfo;
 #else
 class NSPrintInfo;
 #endif  // __OBJC__
@@ skipping 52 matching lines @@
 
   // Reinitializes the settings to uninitialized for object reuse.
   void ResetSettings();
 
   // Does platform specific setup of the printer before the printing. Signal the
   // printer that a document is about to be spooled.
   // Warning: This function enters a message loop. That may cause side effects
   // like IPC message processing! Some printers have side-effects on this call
   // like virtual printers that ask the user for the path of the saved document;
   // for example a PDF printer.
-  Result NewDocument(const std::wstring& document_name);
+  Result NewDocument(const string16& document_name);
 
   // Starts a new page.
   Result NewPage();
 
   // Closes the printed page.
   Result PageDone();
 
   // Closes the printing job. After this call the object is ready to start a new
   // document.
   Result DocumentDone();
@@ skipping 86 matching lines @@
 
   // Did the user cancel the print job.
   volatile bool abort_printing_;
 
   DISALLOW_COPY_AND_ASSIGN(PrintingContext);
 };
 
 }  // namespace printing
 
 #endif  // PRINTING_PRINTING_CONTEXT_H_