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

samplecode/SampleFuzz.cpp

Index: samplecode/SampleFuzz.cpp
diff --git a/samplecode/SampleFuzz.cpp b/samplecode/SampleFuzz.cpp
index 76420f026a6e53ed81cc0dc1d95cedc62c2b5e21..c7d05782e32504c96e371065763b4757407caeec 100644
--- a/samplecode/SampleFuzz.cpp
+++ b/samplecode/SampleFuzz.cpp
@@ -153,15 +153,15 @@ static void do_fuzz(SkCanvas* canvas) {
       break;
 
       case 2: {
-          SkXfermode::Mode mode;
+          SkBlendMode mode;
           switch (R(3)) {
-            case 0: mode = SkXfermode::kSrc_Mode; break;
-            case 1: mode = SkXfermode::kXor_Mode; break;
+            case 0: mode = SkBlendMode::kSrc; break;
+            case 1: mode = SkBlendMode::kXor; break;
             case 2:
             default:  // silence warning
-              mode = SkXfermode::kSrcOver_Mode; break;
+              mode = SkBlendMode::kSrcOver; break;
           }
-          paint.setXfermodeMode(mode);
+          paint.setBlendMode(mode);
       }
       break;