Set the job name for the print job on the Mac....

printing/printing_context.h

 // Copyright (c) 2006-2008 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)
@@ skipping 29 matching lines @@
     OK,
     CANCEL,
     FAILED,
   };
 
   PrintingContext();
   ~PrintingContext();
 
   // Asks the user what printer and format should be used to print. Updates the
   // context with the select device settings.
-  Result AskUserForSettings(gfx::NativeWindow window, int max_pages,
+  Result AskUserForSettings(gfx::NativeView parent_view, int max_pages,
                             bool has_selection);
 
   // Selects the user's default printer and format. Updates the context with the
   // default device settings.
   Result UseDefaultSettings();
 
   void SetUseOverlays(bool use_overlays) {
     settings_.use_overlays = use_overlays;
   }
 
@@ skipping 110 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_