Revert[8] "replace SkXfermode obj with SkBlendMode enum in paints"

samplecode/SamplePathClip.cpp

Index: samplecode/SamplePathClip.cpp
diff --git a/samplecode/SamplePathClip.cpp b/samplecode/SamplePathClip.cpp
index a53fe7186bc748c032878f86d882345e3757cbe7..af9608f0ebab9cd17b3b44de14f87a04b9416a20 100644
--- a/samplecode/SamplePathClip.cpp
+++ b/samplecode/SamplePathClip.cpp
@@ -225,7 +225,7 @@ protected:
         // We use a layer, so we can PLUS the different edge-colors, showing where two edges
         // canceled each other out.
         canvas->saveLayer(nullptr, nullptr);
-        p.setXfermodeMode(SkXfermode::kPlus_Mode);
+        p.setBlendMode(SkBlendMode::kPlus);
         for (int i = 0; i < N; ++i) {
             const int j = (i + 1) % N;
             p.setColor(fEdgeColor[i]);