Port convolve functions to SkOpts

src/core/SkOpts.h

Index: src/core/SkOpts.h
diff --git a/src/core/SkOpts.h b/src/core/SkOpts.h
index 76ca68a2bdbfc78cee854d24264507be0af8fd94..f51da9c69cfcba07b6c482313f73a2df9274ebb3 100644
--- a/src/core/SkOpts.h
+++ b/src/core/SkOpts.h
@@ -12,6 +12,7 @@
 #include "SkTextureCompressor.h"
 #include "SkTypes.h"
 #include "SkXfermode.h"
+#include "SkConvolver.h"
 #include <functional>
 
 struct ProcCoeff;
@@ -76,6 +77,15 @@ namespace SkOpts {
 
     extern
     std::function<void(size_t, size_t)> (*compile_pipeline)(const SkRasterPipeline::Stage*, int);
+
+    extern void (*convolve_vertically)(const SkConvolutionFilter1D::ConvolutionFixed* filter_values,
+                                       int filter_length, unsigned char* const* source_data_rows,
+                                       int pixel_width, unsigned char* out_row, bool has_alpha);
+    extern void (*convolve_4_rows_horizontally)(const unsigned char* src_data[4],
+                                                const SkConvolutionFilter1D& filter,
+                                                unsigned char* out_row[4], size_t out_row_bytes);
+    extern void (*convolve_horizontally)(const unsigned char* src_data, const SkConvolutionFilter1D& filter,
+                                         unsigned char* out_row, bool has_alpha);
 }
 
 #endif//SkOpts_DEFINED