Remove dart backend

test/dart_codegen/expect/core/string.dart

Index: test/dart_codegen/expect/core/string.dart
diff --git a/test/dart_codegen/expect/core/string.dart b/test/dart_codegen/expect/core/string.dart
deleted file mode 100644
index ad1be6150cc013affcc42d71fb290362d3afaf22..0000000000000000000000000000000000000000
--- a/test/dart_codegen/expect/core/string.dart
+++ /dev/null
@@ -1,135 +0,0 @@
-part of dart.core;
- abstract class String implements Comparable<String>, Pattern {external factory String.fromCharCodes(Iterable<int> charCodes, [int start = 0, int end]);
- external factory String.fromCharCode(int charCode);
- external const factory String.fromEnvironment(String name, {
-  String defaultValue}
-);
- String operator [](int index);
- int codeUnitAt(int index);
- int get length;
- int get hashCode;
- bool operator ==(Object other);
- bool endsWith(String other);
- bool startsWith(Pattern pattern, [int index = 0]);
- int indexOf(Pattern pattern, [int start]);
- int lastIndexOf(Pattern pattern, [int start]);
- bool get isEmpty;
- bool get isNotEmpty;
- String operator +(String other);
- String substring(int startIndex, [int endIndex]);
- String trim();
- String trimLeft();
- String trimRight();
- String operator *(int times);
- String padLeft(int width, [String padding = ' ']);
- String padRight(int width, [String padding = ' ']);
- bool contains(Pattern other, [int startIndex = 0]);
- String replaceFirst(Pattern from, String to, [int startIndex = 0]);
- String replaceAll(Pattern from, String replace);
- String replaceAllMapped(Pattern from, String replace(Match match));
- List<String> split(Pattern pattern);
- String splitMapJoin(Pattern pattern, {
-  String onMatch(Match match), String onNonMatch(String nonMatch)}
-);
- List<int> get codeUnits;
- Runes get runes;
- String toLowerCase();
- String toUpperCase();
-}
- class Runes extends IterableBase<int> {final String string;
- Runes(this.string);
- RuneIterator get iterator => new RuneIterator(string);
- int get last {
-if (string.length == 0) {
-  throw new StateError('No elements.');
-  }
- int length = string.length;
- int code = string.codeUnitAt(length - 1);
- if (_isTrailSurrogate(code) && string.length > 1) {
-  int previousCode = string.codeUnitAt(length - 2);
-   if (_isLeadSurrogate(previousCode)) {
-    return _combineSurrogatePair(previousCode, code);
-    }
-  }
- return code;
-}
-}
- bool _isLeadSurrogate(int code) => (code & 0xFC00) == 0xD800;
- bool _isTrailSurrogate(int code) => (code & 0xFC00) == 0xDC00;
- int _combineSurrogatePair(int start, int end) {
-return 0x10000 + ((start & 0x3FF) << 10) + (end & 0x3FF);
-}
- class RuneIterator implements BidirectionalIterator<int> {final String string;
- int _position;
- int _nextPosition;
- num _currentCodePoint;
- RuneIterator(String string) : this.string = string, _position = 0, _nextPosition = 0;
- RuneIterator.at(String string, int index) : string = string, _position = index, _nextPosition = index {
-RangeError.checkValueInInterval(index, 0, string.length);
- _checkSplitSurrogate(index);
-}
- void _checkSplitSurrogate(int index) {
-if (index > 0 && index < string.length && _isLeadSurrogate(string.codeUnitAt(index - 1)) && _isTrailSurrogate(string.codeUnitAt(index))) {
-throw new ArgumentError('Index inside surrogate pair: $index');
-}
-}
- int get rawIndex => (_position != _nextPosition) ? _position : null;
- void set rawIndex(int rawIndex) {
-RangeError.checkValidIndex(rawIndex, string, "rawIndex");
- reset(rawIndex);
- moveNext();
-}
- void reset([int rawIndex = 0]) {
-RangeError.checkValueInInterval(rawIndex, 0, string.length, "rawIndex");
- _checkSplitSurrogate(rawIndex);
- _position = _nextPosition = rawIndex;
- _currentCodePoint = null;
-}
- int get current => DEVC$RT.cast(_currentCodePoint, num, int, "ImplicitCast", """line 702, column 22 of dart:core/string.dart: """, _currentCodePoint is int, true);
- int get currentSize => _nextPosition - _position;
- String get currentAsString {
-if (_position == _nextPosition) return null;
- if (_position + 1 == _nextPosition) return string[_position];
- return string.substring(_position, _nextPosition);
-}
- bool moveNext() {
-_position = _nextPosition;
- if (_position == string.length) {
-_currentCodePoint = null;
- return false;
-}
- int codeUnit = string.codeUnitAt(_position);
- int nextPosition = _position + 1;
- if (_isLeadSurrogate(codeUnit) && nextPosition < string.length) {
-int nextCodeUnit = string.codeUnitAt(nextPosition);
- if (_isTrailSurrogate(nextCodeUnit)) {
-  _nextPosition = nextPosition + 1;
-   _currentCodePoint = _combineSurrogatePair(codeUnit, nextCodeUnit);
-   return true;
-  }
-}
- _nextPosition = nextPosition;
- _currentCodePoint = codeUnit;
- return true;
-}
- bool movePrevious() {
-_nextPosition = _position;
- if (_position == 0) {
-_currentCodePoint = null;
- return false;
-}
- int position = _position - 1;
- int codeUnit = string.codeUnitAt(position);
- if (_isTrailSurrogate(codeUnit) && position > 0) {
-int prevCodeUnit = string.codeUnitAt(position - 1);
- if (_isLeadSurrogate(prevCodeUnit)) {
-  _position = position - 1;
-   _currentCodePoint = _combineSurrogatePair(prevCodeUnit, codeUnit);
-   return true;
-  }
-}
- _position = position;
- _currentCodePoint = codeUnit;
- return true;
-}
-}