clean up printing::Image and printing::Metafile

printing/pdf_metafile_skia.cc

Index: printing/pdf_metafile_skia.cc
diff --git a/printing/pdf_metafile_skia.cc b/printing/pdf_metafile_skia.cc
index 54c1cf3568a074c0266841b46afa8ac18e219407..b2e914b38de97bd017e453272e739347ab9627a4 100644
--- a/printing/pdf_metafile_skia.cc
+++ b/printing/pdf_metafile_skia.cc
@@ -233,12 +233,6 @@ skia::NativeDrawingContext PdfMetafileSkia::context() const {
 
 
 #if defined(OS_WIN)
-bool PdfMetafileSkia::Playback(skia::NativeDrawingContext hdc,
-                               const RECT* rect) const {
-  NOTREACHED();
-  return false;
-}
-
 bool PdfMetafileSkia::SafePlayback(skia::NativeDrawingContext hdc) const {
   NOTREACHED();
   return false;