Change PDF scaling factor from double to float.

printing/metafile_skia_wrapper.h

Index: printing/metafile_skia_wrapper.h
diff --git a/printing/metafile_skia_wrapper.h b/printing/metafile_skia_wrapper.h
index fdf5f751f1ae74e13a6d4251c997b61e102e1d82..6236e85a4c4c5e372009b7c237b94c01648212eb 100644
--- a/printing/metafile_skia_wrapper.h
+++ b/printing/metafile_skia_wrapper.h
@@ -25,10 +25,6 @@ class PRINTING_EXPORT MetafileSkiaWrapper : public SkRefCnt {
 
   static PdfMetafileSkia* 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(PdfMetafileSkia* metafile);