DNC - JSON of flattenables, with field names.

src/effects/SkArithmeticMode.cpp

Index: src/effects/SkArithmeticMode.cpp
diff --git a/src/effects/SkArithmeticMode.cpp b/src/effects/SkArithmeticMode.cpp
index e926f1bc9ad860d98999f732914cf0be03be2225..1a983adb5d99c79b84fffed7c6136f6289db4c72 100644
--- a/src/effects/SkArithmeticMode.cpp
+++ b/src/effects/SkArithmeticMode.cpp
@@ -40,11 +40,11 @@ public:
 
 private:
     void flatten(SkWriteBuffer& buffer) const override {
-        buffer.writeScalar(fK[0]);
-        buffer.writeScalar(fK[1]);
-        buffer.writeScalar(fK[2]);
-        buffer.writeScalar(fK[3]);
-        buffer.writeBool(fEnforcePMColor);
+        buffer.writeScalar("fK0", fK[0]);
+        buffer.writeScalar("fK1", fK[1]);
+        buffer.writeScalar("fK2", fK[2]);
+        buffer.writeScalar("fK3", fK[3]);
+        buffer.writeBool("fEnforcePMColor", fEnforcePMColor);
     }
 
     SkScalar fK[4];