Create a Factory for NativeMetafile.

printing/pdf_metafile_mac_unittest.cc

Index: printing/pdf_metafile_mac_unittest.cc
diff --git a/printing/pdf_metafile_mac_unittest.cc b/printing/pdf_metafile_mac_unittest.cc
index ec8cd3a3e7d05be45168281e351daf6fa9fa8430..8b52b0677da2a92bb073693f6edf0acbcff4ccf0 100644
--- a/printing/pdf_metafile_mac_unittest.cc
+++ b/printing/pdf_metafile_mac_unittest.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// 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.
 
@@ -12,6 +12,8 @@
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/gfx/rect.h"
 
+namespace printing {
+
 TEST(PdfMetafileTest, Pdf) {
   // Test in-renderer constructor.
   printing::PdfMetafile pdf;
@@ -60,3 +62,5 @@ TEST(PdfMetafileTest, Pdf) {
   EXPECT_EQ(720, page_size.width());
   EXPECT_EQ(540, page_size.height());
 }
+
+}  // namespace printing