mac: Clean up a few more uses of USE_SKIA

printing/metafile_impl.h

Index: printing/metafile_impl.h
diff --git a/printing/metafile_impl.h b/printing/metafile_impl.h
index 38c68a3185f0146c277400057f7e074c2836e1f5..840a1cede68ccad26eac75303d9ffedf1fcd7b17 100644
--- a/printing/metafile_impl.h
+++ b/printing/metafile_impl.h
@@ -5,14 +5,10 @@
 #ifndef PRINTING_METAFILE_IMPL_H_
 #define PRINTING_METAFILE_IMPL_H_
 
+#include "printing/pdf_metafile_skia.h"
+
 #if defined(OS_WIN)
 #include "printing/emf_win.h"
-#elif defined(OS_MACOSX)
-#include "printing/pdf_metafile_cg_mac.h"
-#endif
-
-#if !defined(OS_MACOSX) || defined(USE_SKIA)
-#include "printing/pdf_metafile_skia.h"
 #endif
 
 namespace printing {
@@ -20,14 +16,6 @@ namespace printing {
 #if defined(OS_WIN)
 typedef Emf NativeMetafile;
 typedef PdfMetafileSkia PreviewMetafile;
-#elif defined(OS_MACOSX)
-#if defined(USE_SKIA)
-typedef PdfMetafileSkia NativeMetafile;
-typedef PdfMetafileSkia PreviewMetafile;
-#else
-typedef PdfMetafileCg NativeMetafile;
-typedef PdfMetafileCg PreviewMetafile;
-#endif
 #elif defined(OS_POSIX)
 typedef PdfMetafileSkia NativeMetafile;
 typedef PdfMetafileSkia PreviewMetafile;