Rewriting MatrixConvolution image filter with SSE and AVX2

src/core/SkOpts.h

Index: src/core/SkOpts.h
diff --git a/src/core/SkOpts.h b/src/core/SkOpts.h
index 398904782676e036b0cacedbd7fd9858165db1e8..90467e041e41b269a9df72cf46f7c16108676a72 100644
--- a/src/core/SkOpts.h
+++ b/src/core/SkOpts.h
@@ -67,6 +67,18 @@ namespace SkOpts {
 
     extern void (*half_to_float)(float[], const uint16_t[], int);
     extern void (*float_to_half)(uint16_t[], const float[], int);
+
+    extern void (*matrix_convolution_image_filter_filter_pixels)(
+	const SkBitmap& src,
+	SkBitmap* result,
+	const SkIRect& r,
+	const SkIRect& bounds,
+	bool convolveAlpha,
+	SkScalar* kernel,
+	const SkISize& kernel_size,
+	const SkIPoint&  kernel_offset,
+	SkScalar gain,
+	SkScalar bias);
 }
 
 #endif//SkOpts_DEFINED