centralize VECTORCALL as SK_VECTORCALL

tests/SkLinearBitmapPipelineTest.cpp

Index: tests/SkLinearBitmapPipelineTest.cpp
diff --git a/tests/SkLinearBitmapPipelineTest.cpp b/tests/SkLinearBitmapPipelineTest.cpp
index be52e299ea867412cc5a692266a28ac804d95bf8..4b54641eca3ab83925ebe0c8f361b19b0f38337b 100644
--- a/tests/SkLinearBitmapPipelineTest.cpp
+++ b/tests/SkLinearBitmapPipelineTest.cpp
@@ -115,14 +115,14 @@ static bool compare_tiler_case(
     std::vector<SkPoint> listPoints;
     std::vector<SkPoint> spanPoints;
     struct Sink {
-        void VECTORCALL pointListFew(int n, Sk4s xs, Sk4s ys) {
+        void SK_VECTORCALL pointListFew(int n, Sk4s xs, Sk4s ys) {
             SkASSERT(0 < n && n < 4);
             if (n >= 1) storePoint({xs[0], ys[0]});
             if (n >= 2) storePoint({xs[1], ys[1]});
             if (n >= 3) storePoint({xs[2], ys[2]});
         }
 
-        void VECTORCALL pointList4(Sk4s xs, Sk4s ys) {
+        void SK_VECTORCALL pointList4(Sk4s xs, Sk4s ys) {
             storePoint({xs[0], ys[0]});
             storePoint({xs[1], ys[1]});
             storePoint({xs[2], ys[2]});