DNC - JSON of flattenables, with field names.

src/effects/SkMergeImageFilter.cpp

Index: src/effects/SkMergeImageFilter.cpp
diff --git a/src/effects/SkMergeImageFilter.cpp b/src/effects/SkMergeImageFilter.cpp
index 2dd02ee529ce283b7ecf16a0963b57d106a141ea..6f9ea9537d19ea4c56d00084c7161ff31daf3d61 100755
--- a/src/effects/SkMergeImageFilter.cpp
+++ b/src/effects/SkMergeImageFilter.cpp
@@ -175,9 +175,9 @@ sk_sp<SkFlattenable> SkMergeImageFilter::CreateProc(SkReadBuffer& buffer) {
 
 void SkMergeImageFilter::flatten(SkWriteBuffer& buffer) const {
     this->INHERITED::flatten(buffer);
-    buffer.writeBool(fModes != nullptr);
+    buffer.writeBool("modesValid", fModes != nullptr);
     if (fModes) {
-        buffer.writeByteArray(fModes, this->countInputs() * sizeof(fModes[0]));
+        buffer.writeByteArray("fModes", fModes, this->countInputs() * sizeof(fModes[0]));
     }
 }