Remove dart backend

test/dart_codegen/expect/convert/byte_conversion.dart

-part of dart.convert;
- abstract class ByteConversionSink extends ChunkedConversionSink<List<int>> {ByteConversionSink();
- factory ByteConversionSink.withCallback(void callback(List<int> accumulated)) = _ByteCallbackSink;
- factory ByteConversionSink.from(Sink<List<int>> sink) = _ByteAdapterSink;
- void addSlice(List<int> chunk, int start, int end, bool isLast);
-}
- abstract class ByteConversionSinkBase extends ByteConversionSink {void add(List<int> chunk);
- void close();
- void addSlice(List<int> chunk, int start, int end, bool isLast) {
-add(chunk.sublist(start, end));
- if (isLast) close();
-}
-}
- class _ByteAdapterSink extends ByteConversionSinkBase {final Sink<List<int>> _sink;
- _ByteAdapterSink(this._sink);
- void add(List<int> chunk) => _sink.add(chunk);
- void close() => _sink.close();
-}
- class _ByteCallbackSink extends ByteConversionSinkBase {static const _INITIAL_BUFFER_SIZE = 1024;
- final _ChunkedConversionCallback<List<int>> _callback;
- List<int> _buffer = new Uint8List(_INITIAL_BUFFER_SIZE);
- int _bufferIndex = 0;
- _ByteCallbackSink(void callback(List<int> accumulated)) : this._callback = callback;
- void add(Iterable<int> chunk) {
-int freeCount = _buffer.length - _bufferIndex;
- if (chunk.length > freeCount) {
-int oldLength = _buffer.length;
- int newLength = _roundToPowerOf2(chunk.length + oldLength) * 2;
- List<int> grown = new Uint8List(newLength);
- grown.setRange(0, _buffer.length, _buffer);
- _buffer = grown;
-}
- _buffer.setRange(_bufferIndex, _bufferIndex + chunk.length, chunk);
- _bufferIndex += chunk.length;
-}
- static int _roundToPowerOf2(int v) {
-assert (v > 0); v--;
- v |= v >> 1;
- v |= v >> 2;
- v |= v >> 4;
- v |= v >> 8;
- v |= v >> 16;
- v++;
- return v;
-}
- void close() {
-_callback(_buffer.sublist(0, _bufferIndex));
-}
-}