updateBytes abstract method
Compares the pixels of decoded png bytes against the golden file
identified by golden.
This will be invoked in lieu of compareBytes when autoUpdateGoldenFiles
is true (which gets set automatically by the test framework when the
user runs flutter test --update-goldens --platform=chrome).
The method by which golden is located and by which its bytes are written
is left up to the implementation class.
Implementation
Future<void> updateBytes(Uint8List bytes, Uri golden);