A better fix for scaling issue.

printing/metafile_skia_wrapper.h

Index: printing/metafile_skia_wrapper.h
===================================================================
--- printing/metafile_skia_wrapper.h	(revision 135774)
+++ printing/metafile_skia_wrapper.h	(working copy)
@@ -24,6 +24,10 @@
 
   static Metafile* GetMetafileFromCanvas(const SkCanvas& canvas);
 
+  // Methods to set and retrieve custom scale factor for metafile from canvas.
+  static void SetCustomScaleOnCanvas(const SkCanvas& canvas, double scale);
+  static bool GetCustomScaleOnCanvas(const SkCanvas& canvas, double* scale);
+
  private:
   explicit MetafileSkiaWrapper(Metafile* metafile);