Unifying NativeMetafile class interface (as much as possible) for Linux, Mac, Win

chrome/service/service_utility_process_host.cc

 // 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.
 
 #include "chrome/service/service_utility_process_host.h"
 
 #include "app/app_switches.h"
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/message_loop.h"
@@ skipping 194 matching lines @@
     LOG(WARNING) << "Unable to set scratch metafile directory";
 #if defined(OS_WIN)
   scoped_ptr<printing::NativeMetafile> metafile(
       printing::NativeMetafileFactory::CreateMetafile());
   if (!metafile->CreateFromFile(metafile_path)) {
     OnRenderPDFPagesToMetafileFailed();
   } else {
     OnRenderPDFPagesToMetafileSucceeded(*metafile,
                                         highest_rendered_page_number);
     // Close it so that ScopedTempDir can delete the folder.
-    metafile->CloseEmf();
+    metafile->Close();
   }
 #endif  // defined(OS_WIN)
 }