Rewriting MatrixConvolution image filter with SSE and AVX2

src/opts/SkOpts_sse_sse2.cpp

Index: src/opts/SkOpts_sse_sse2.cpp
diff --git a/src/opts/SkOpts_sse_sse2.cpp b/src/opts/SkOpts_sse_sse2.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..1fa58d265d220731afc13541b737c4ebab841ebb
--- /dev/null
+++ b/src/opts/SkOpts_sse_sse2.cpp
@@ -0,0 +1,17 @@
+/*
+ * Copyright 2016 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "SkOpts.h"
+#include "SkMatrixConvolutionImageFilter_opts_SSE.h"
+
+
+namespace SkOpts {
+    void Init_sse_sse2() {
+        matrix_convolution_image_filter_filter_pixels =
+          sk_sse::SkMatrixConvolutionImageFilter_filterPixels_SSE;
+    }
+}