Upgrade to the latest dart:convert.

tool/sdk_expected_errors.txt

Index: tool/sdk_expected_errors.txt
diff --git a/tool/sdk_expected_errors.txt b/tool/sdk_expected_errors.txt
index e7abbdaf47ae652d4531a21b7fef27b698bde3c8..f0e9b50425701362a614ca9af1e846e4d85d97bf 100644
--- a/tool/sdk_expected_errors.txt
+++ b/tool/sdk_expected_errors.txt
@@ -1,17 +1,9 @@
 [error] The argument type 'InternalMap' cannot be assigned to the parameter type 'Map'. (dart:_isolate_helper/isolate_serialization.dart, line 47, col 47)
 [error] Base class introduces an invalid override. The type of JSArray.[]= ((int, E) → void) is not a subtype of JSMutableIndexable.[]= ((int, dynamic) → dynamic). (dart:_interceptors/js_array.dart, line 576, col 25)
 [error] Invalid override. The type of NativeTypedArrayOfDouble.[]= ((int, num) → void) is not a subtype of JSMutableIndexable.[]= ((int, dynamic) → dynamic). (dart:_native_typed_data, line 793, col 3)
-[error] Invalid override. The type of _UnicodeSubsetEncoder.bind ((Stream<String>) → Stream<List<int>>) is not a subtype of StreamTransformer<dynamic, dynamic>.bind ((Stream<dynamic>) → Stream<dynamic>). (dart:convert/ascii.dart, line 114, col 3)
-[error] Invalid override. The type of _UnicodeSubsetDecoder.bind ((Stream<List<int>>) → Stream<String>) is not a subtype of StreamTransformer<dynamic, dynamic>.bind ((Stream<dynamic>) → Stream<dynamic>). (dart:convert/ascii.dart, line 222, col 3)
-[error] Invalid override. The type of ChunkedConverter.startChunkedConversion ((Sink<T2>) → ChunkedConversionSink<S2>) is not a subtype of Converter<S, T>.startChunkedConversion ((Sink<dynamic>) → ChunkedConversionSink<dynamic>). (dart:convert/chunked_conversion.dart, line 33, col 3)
-[error] Invalid override. The type of ChunkedConverter.bind ((Stream<S2>) → Stream<T2>) is not a subtype of Converter<S, T>.bind ((Stream<dynamic>) → Stream<dynamic>). (dart:convert/chunked_conversion.dart, line 38, col 3)
-[error] Invalid override. The type of ChunkedConverter.bind ((Stream<S2>) → Stream<T2>) is not a subtype of StreamTransformer<dynamic, dynamic>.bind ((Stream<dynamic>) → Stream<dynamic>). (dart:convert/chunked_conversion.dart, line 38, col 3)
-[error] The redirected constructor '((List<dynamic>) → void) → _SimpleCallbackSink<dynamic>' has incompatible parameters with '((List<T>) → void) → ChunkedConversionSink<T>' (dart:convert/chunked_conversion.dart, line 74, col 45)
-[error] Invalid override. The type of JsonDecoder.bind ((Stream<String>) → Stream<Object>) is not a subtype of StreamTransformer<dynamic, dynamic>.bind ((Stream<dynamic>) → Stream<dynamic>). (dart:convert/json.dart, line 513, col 3)
-[error] Invalid override. The type of _JsonStringStringifierPretty.writeIndentation ((int) → void) is not a subtype of _JsonPrettyPrintMixin.writeIndentation ((dynamic) → void). (dart:convert/json.dart, line 905, col 3)
-[error] Invalid override. The type of _JsonUtf8StringifierPretty.writeIndentation ((int) → void) is not a subtype of _JsonPrettyPrintMixin.writeIndentation ((dynamic) → void). (dart:convert/json.dart, line 1063, col 3)
-[error] Invalid override. The type of Utf8Encoder.bind ((Stream<String>) → Stream<List<int>>) is not a subtype of StreamTransformer<dynamic, dynamic>.bind ((Stream<dynamic>) → Stream<dynamic>). (dart:convert/utf.dart, line 130, col 3)
-[error] Invalid override. The type of Utf8Decoder.bind ((Stream<List<int>>) → Stream<String>) is not a subtype of StreamTransformer<dynamic, dynamic>.bind ((Stream<dynamic>) → Stream<dynamic>). (dart:convert/utf.dart, line 370, col 3)
+[error] Invalid override. The type of ChunkedConverter.bind ((dynamic) → dynamic) is not a subtype of Converter<S, T>.bind ((Stream<S>) → Stream<T>). (dart:convert/chunked_conversion.dart, line 14, col 3)
+[error] Invalid override. The type of ChunkedConverter.bind ((dynamic) → dynamic) is not a subtype of StreamTransformer<S, T>.bind ((Stream<S>) → Stream<T>). (dart:convert/chunked_conversion.dart, line 14, col 3)
+[error] Invalid override. The type of ChunkedConverter.startChunkedConversion ((dynamic) → dynamic) is not a subtype of Converter<S, T>.startChunkedConversion ((Sink<T>) → Sink<S>). (dart:convert/chunked_conversion.dart, line 15, col 3)
 [error] Invalid override. The type of DateTime.compareTo ((DateTime) → int) is not a subtype of Comparable<dynamic>.compareTo ((dynamic) → int). (dart:core/date_time.dart, line 448, col 3)
 [error] Annotation can be only constant variable or constant constructor invocation (dart:core/stacktrace.dart, line 43, col 3)
 [error] Invalid override. The type of FileList.[]= ((int, File) → void) is not a subtype of JSMutableIndexable.[]= ((int, dynamic) → dynamic). (dart:html, line 16869, col 3)
@@ -112,20 +104,9 @@
 [warning] Unsound implicit cast from dynamic to E (dart:collection, line 1620, col 47)
 [warning] Unsound implicit cast from dynamic to E (dart:collection, line 1682, col 18)
 [warning] Unsound implicit cast from dynamic to LinkedHashMap<K, V> (dart:collection/linked_hash_map.dart, line 160, col 12)
-[warning] Unsound implicit cast from List<dynamic> to List<int> (dart:convert/ascii.dart, line 97, col 12)
-[warning] Unsound implicit cast from Converter<S, dynamic> to Converter<S, T> (dart:convert/codec.dart, line 87, col 34)
-[warning] Unsound implicit cast from Converter<T, dynamic> to Converter<T, S> (dart:convert/codec.dart, line 88, col 34)
+[warning] Unsound implicit cast from dynamic to Stream<S> (dart:convert/chunked_conversion.dart, line 14, col 45)
+[warning] Unsound implicit cast from dynamic to Sink<T> (dart:convert/chunked_conversion.dart, line 16, col 36)
 [warning] Unsound implicit cast from dynamic to List<String> (dart:convert, line 311, col 12)
-[warning] Unsound implicit cast from Converter<S, T> to ChunkedConverter<dynamic, dynamic, dynamic, dynamic> (dart:convert/converter.dart, line 51, col 59)
-[warning] Unsound implicit cast from ChunkedConverter<List<int>, String, List<int>, String> to StreamTransformer<List<int>, dynamic> (dart:convert/encoding.dart, line 18, col 18)
-[warning] Unsound implicit cast from (dynamic) → dynamic to (Object) → Object (dart:convert/json.dart, line 145, col 28)
-[warning] Unsound implicit cast from (dynamic) → dynamic to (Object) → Object (dart:convert/json.dart, line 150, col 28)
-[warning] Unsound implicit cast from Function to (Object) → dynamic (dart:convert/json.dart, line 273, col 42)
-[warning] Unsound implicit cast from Function to (Object) → dynamic (dart:convert/json.dart, line 357, col 36)
-[warning] Unsound implicit cast from Function to (Object) → dynamic (dart:convert/json.dart, line 460, col 53)
-[warning] Unsound implicit cast from Map<dynamic, dynamic> to Map<String, Object> (dart:convert/json.dart, line 719, col 30)
-[warning] Unsound implicit cast from dynamic to (Object) → Object (dart:convert/json.dart, line 847, col 60)
-[warning] Unsound implicit cast from dynamic to (Object) → Object (dart:convert/json.dart, line 925, col 15)
 [warning] Unsound implicit cast from dynamic to T (dart:core/expando.dart, line 55, col 12)
 [warning] Unsound implicit cast from dynamic to E (dart:core/list.dart, line 126, col 16)
 [warning] The final variable 'origin' must be initialized (dart:html, line 177, col 3)