Skia Filter Quality and Scaling Metrics

include/core/SkDevice.h

Index: include/core/SkDevice.h
diff --git a/include/core/SkDevice.h b/include/core/SkDevice.h
index c15aeccf82dc52786b6899cfcdbfabc885fe9e36..3a6d6ea5fcdb19a06d7dc4ca3a24347e668ed963 100644
--- a/include/core/SkDevice.h
+++ b/include/core/SkDevice.h
@@ -387,6 +387,9 @@ protected:
     virtual void drawSpriteWithFilter(const SkDraw&, const SkBitmap&,
                                       int x, int y, const SkPaint&);
 
+    // A helper function used by derived classes to log the scale factor of a bitmap or image draw.
+    static void LogDrawScaleFactor(const SkMatrix&, SkFilterQuality);
+
 private:
     friend class SkCanvas;
     friend struct DeviceCM; //for setMatrixClip