Prototype code that turns any/every flattenable into JSON

src/core/SkPictureData.cpp

Index: src/core/SkPictureData.cpp
diff --git a/src/core/SkPictureData.cpp b/src/core/SkPictureData.cpp
index 4de1cc3cec9e03b683a2388ad2f0b0f6248a7eb6..8ad7a828731d46d08e6b0ac63e2bab133b5dd3c5 100644
--- a/src/core/SkPictureData.cpp
+++ b/src/core/SkPictureData.cpp
@@ -275,7 +275,7 @@ void SkPictureData::serialize(SkWStream* stream,
     // We delay serializing the bulk of our data until after we've serialized
     // factories and typefaces by first serializing to an in-memory write buffer.
     SkFactorySet factSet;  // buffer refs factSet, so factSet must come first.
-    SkWriteBuffer buffer(SkWriteBuffer::kCrossProcess_Flag);
+    SkBinaryWriteBuffer buffer(SkBinaryWriteBuffer::kCrossProcess_Flag);
     buffer.setFactoryRecorder(&factSet);
     buffer.setPixelSerializer(pixelSerializer);
     buffer.setTypefaceRecorder(typefaceSet);