Add SkRasterPipeline blitter.

src/core/SkBlitter.cpp

Index: src/core/SkBlitter.cpp
diff --git a/src/core/SkBlitter.cpp b/src/core/SkBlitter.cpp
index f5d13dc5f1e08006b33b40a422ef221be4bcfc3c..1098cef71b136444d90cd5b8c8e88d806ed72baf 100644
--- a/src/core/SkBlitter.cpp
+++ b/src/core/SkBlitter.cpp
@@ -13,6 +13,7 @@
 #include "SkWriteBuffer.h"
 #include "SkMask.h"
 #include "SkMaskFilter.h"
+#include "SkRasterPipelineBlitter.h"
 #include "SkString.h"
 #include "SkTLazy.h"
 #include "SkUtils.h"
@@ -853,6 +854,10 @@ SkBlitter* SkBlitter::Choose(const SkPixmap& device,
         p->setColor(0);
     }
 
+    if (auto blitter = SkCreateRasterPipelineBlitter(device, *paint)) {
+        return blitter.release();
+    }
+
     if (nullptr == shader) {
         if (mode) {
             // xfermodes (and filters) require shaders for our current blitters