SDK fixes

test/dart_codegen/expect/convert/ascii.dart

 part of dart.convert;
  const AsciiCodec ASCII = const AsciiCodec();
  const int _ASCII_MASK = 0x7F;
  class AsciiCodec extends Encoding {final bool _allowInvalid;
  const AsciiCodec({
   bool allowInvalid : false}
 ) : _allowInvalid = allowInvalid;
  String get name => "us-ascii";
  String decode(List<int> bytes, {
   bool allowInvalid}
@@ skipping 31 matching lines @@
 ), "CompositeCast", """line 96, column 12 of dart:convert/ascii.dart: """, result is List<int>, false);
 }
  StringConversionSink startChunkedConversion(Sink<List<int>> sink) {
 if (sink is! ByteConversionSink) {
   sink = new ByteConversionSink.from(sink);
   }
  return new _UnicodeSubsetEncoderSink(_subsetMask, DEVC$RT.cast(sink, DEVC$RT.type((Sink<List<int>> _) {
   }
 ), ByteConversionSink, "ImplicitCast", """line 109, column 55 of dart:convert/ascii.dart: """, sink is ByteConversionSink, true));
 }
- Stream<List<int>> bind(Stream<String> stream) => ((__x0) => DEVC$RT.cast(__x0, DEVC$RT.type((DDC$async$.Stream<dynamic> _) {
-}
-), DEVC$RT.type((DDC$async$.Stream<List<int>> _) {
-}
-), "CompositeCast", """line 113, column 52 of dart:convert/ascii.dart: """, __x0 is DDC$async$.Stream<List<int>>, false))(super.bind(stream));
+ Stream<List<int>> bind(Stream<String> stream) => super.bind(stream);
 }
  class AsciiEncoder extends _UnicodeSubsetEncoder {const AsciiEncoder() : super(_ASCII_MASK);
 }
  class _UnicodeSubsetEncoderSink extends StringConversionSinkBase {final ByteConversionSink _sink;
  final int _subsetMask;
  _UnicodeSubsetEncoderSink(this._subsetMask, this._sink);
  void close() {
 _sink.close();
 }
  void addSlice(String source, int start, int end, bool isLast) {
@@ skipping 32 matching lines @@
  String _convertInvalid(List<int> bytes, int start, int end) {
 StringBuffer buffer = new StringBuffer();
  for (int i = start; i < end; i++) {
 int value = bytes[i];
  if ((value & ~_subsetMask) != 0) value = 0xFFFD;
  buffer.writeCharCode(value);
 }
  return buffer.toString();
 }
  ByteConversionSink startChunkedConversion(Sink<String> sink);
- Stream<String> bind(Stream<List<int>> stream) => ((__x1) => DEVC$RT.cast(__x1, DEVC$RT.type((DDC$async$.Stream<dynamic> _) {
-}
-), DEVC$RT.type((DDC$async$.Stream<String> _) {
-}
-), "CompositeCast", """line 221, column 52 of dart:convert/ascii.dart: """, __x1 is DDC$async$.Stream<String>, false))(super.bind(stream));
+ Stream<String> bind(Stream<List<int>> stream) => super.bind(stream);
 }
  class AsciiDecoder extends _UnicodeSubsetDecoder {const AsciiDecoder({
 bool allowInvalid : false}
 ) : super(allowInvalid, _ASCII_MASK);
  ByteConversionSink startChunkedConversion(Sink<String> sink) {
 StringConversionSink stringSink;
  if (sink is StringConversionSink) {
 stringSink = sink;
 }
  else {
@@ skipping 50 matching lines @@
  RangeError.checkValidRange(start, end, length);
  if (start < end) {
 if (start != 0 || end != length) {
 source = source.sublist(start, end);
 }
  add(source);
 }
  if (isLast) close();
 }
 }