Create a Factory for NativeMetafile.

printing/native_metafile_factory.cc

Index: printing/native_metafile_factory.cc
diff --git a/printing/native_metafile_factory.cc b/printing/native_metafile_factory.cc
new file mode 100644
index 0000000000000000000000000000000000000000..2ae71213c5cc765182ba2aee888c4052e3822e5e
--- /dev/null
+++ b/printing/native_metafile_factory.cc
@@ -0,0 +1,20 @@
+// 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 "printing/native_metafile_factory.h"
+

[vandebo (ex-Chrome), 2011/02/24 22:42:50]

But the headers for the implementations need to be here.

We prefer to minimize the number of includes in headers, pushing them into the
.cc files where necessary.

[dpapad, 2011/02/26 01:42:29]

Done.

+namespace printing {
+
+// static
+printing::NativeMetafile* NativeMetafileFactory::CreateMetafile() {
+#if defined(OS_WIN)
+  return new printing::Emf;
+#elif defined(OS_MACOSX)
+  return new printing::PdfMetafile;
+#elif defined(OS_POSIX)
+  return new printing::PdfPsMetafile;
+#endif
+}
+
+}  // namespace printing