remove fConvolutionProcs from State, and just use it locally

src/opts/opts_check_SSE2.cpp

Index: src/opts/opts_check_SSE2.cpp
diff --git a/src/opts/opts_check_SSE2.cpp b/src/opts/opts_check_SSE2.cpp
index 8d43390a22642badb0a0be60e148d33b70688752..8f0bdac8fd88b647bb88b3c1fca6f640526914b1 100644
--- a/src/opts/opts_check_SSE2.cpp
+++ b/src/opts/opts_check_SSE2.cpp
@@ -107,13 +107,13 @@ static bool cachedHasSSSE3() {
 
 SK_CONF_DECLARE( bool, c_hqfilter_sse, "bitmap.filter.highQualitySSE", false, "Use SSE optimized version of high quality image filters");
 
-void SkBitmapProcState::platformConvolutionProcs() {
+void SkBitmapProcState::platformConvolutionProcs(SkConvolutionProcs* procs) {
     if (cachedHasSSE2()) {
-        fConvolutionProcs->fExtraHorizontalReads = 3;
-        fConvolutionProcs->fConvolveVertically = &convolveVertically_SSE2;
-        fConvolutionProcs->fConvolve4RowsHorizontally = &convolve4RowsHorizontally_SSE2;
-        fConvolutionProcs->fConvolveHorizontally = &convolveHorizontally_SSE2;
-        fConvolutionProcs->fApplySIMDPadding = &applySIMDPadding_SSE2;
+        procs->fExtraHorizontalReads = 3;
+        procs->fConvolveVertically = &convolveVertically_SSE2;
+        procs->fConvolve4RowsHorizontally = &convolve4RowsHorizontally_SSE2;
+        procs->fConvolveHorizontally = &convolveHorizontally_SSE2;
+        procs->fApplySIMDPadding = &applySIMDPadding_SSE2;
     }
 }