Port SkBlitRow::Color32 to SkOpts.
This was a pre-SkOpts attempt that we can bring under its wing now.
This should be a perf no-op, deo volente.
BUG=skia:4117
Review URL: https://codereview.chromium.org/1314863006
diff --git a/src/core/SkOpts.h b/src/core/SkOpts.h
index 04aa9b1..d73319a 100644
--- a/src/core/SkOpts.h
+++ b/src/core/SkOpts.h
@@ -44,6 +44,7 @@
extern bool (*fill_block_dimensions)(SkTextureCompressor::Format, int* x, int* y);
extern void (*blit_mask_d32_a8)(SkPMColor*, size_t, const SkAlpha*, size_t, SkColor, int, int);
+ extern void (*blit_row_color32)(SkPMColor*, const SkPMColor*, int, SkPMColor);
// This function is an optimized version of SkColorCubeFilter::filterSpan
extern void (*color_cube_filter_span)(const SkPMColor[],