Remove dart backend

test/dart_codegen/expect/core/duration.dart

Index: test/dart_codegen/expect/core/duration.dart
diff --git a/test/dart_codegen/expect/core/duration.dart b/test/dart_codegen/expect/core/duration.dart
deleted file mode 100644
index c0f65828f1c3881d8605a39d59a219f8b4d8f251..0000000000000000000000000000000000000000
--- a/test/dart_codegen/expect/core/duration.dart
+++ /dev/null
@@ -1,76 +0,0 @@
-part of dart.core;
- class Duration implements Comparable<Duration> {static const int MICROSECONDS_PER_MILLISECOND = 1000;
- static const int MILLISECONDS_PER_SECOND = 1000;
- static const int SECONDS_PER_MINUTE = 60;
- static const int MINUTES_PER_HOUR = 60;
- static const int HOURS_PER_DAY = 24;
- static const int MICROSECONDS_PER_SECOND = MICROSECONDS_PER_MILLISECOND * MILLISECONDS_PER_SECOND;
- static const int MICROSECONDS_PER_MINUTE = MICROSECONDS_PER_SECOND * SECONDS_PER_MINUTE;
- static const int MICROSECONDS_PER_HOUR = MICROSECONDS_PER_MINUTE * MINUTES_PER_HOUR;
- static const int MICROSECONDS_PER_DAY = MICROSECONDS_PER_HOUR * HOURS_PER_DAY;
- static const int MILLISECONDS_PER_MINUTE = MILLISECONDS_PER_SECOND * SECONDS_PER_MINUTE;
- static const int MILLISECONDS_PER_HOUR = MILLISECONDS_PER_MINUTE * MINUTES_PER_HOUR;
- static const int MILLISECONDS_PER_DAY = MILLISECONDS_PER_HOUR * HOURS_PER_DAY;
- static const int SECONDS_PER_HOUR = SECONDS_PER_MINUTE * MINUTES_PER_HOUR;
- static const int SECONDS_PER_DAY = SECONDS_PER_HOUR * HOURS_PER_DAY;
- static const int MINUTES_PER_DAY = MINUTES_PER_HOUR * HOURS_PER_DAY;
- static const Duration ZERO = const Duration(seconds: 0);
- final int _duration;
- const Duration({
-  int days : 0, int hours : 0, int minutes : 0, int seconds : 0, int milliseconds : 0, int microseconds : 0}
-) : this._microseconds(days * MICROSECONDS_PER_DAY + hours * MICROSECONDS_PER_HOUR + minutes * MICROSECONDS_PER_MINUTE + seconds * MICROSECONDS_PER_SECOND + milliseconds * MICROSECONDS_PER_MILLISECOND + microseconds);
- const Duration._microseconds(this._duration);
- Duration operator +(Duration other) {
-  return new Duration._microseconds(_duration + other._duration);
-  }
- Duration operator -(Duration other) {
-  return new Duration._microseconds(_duration - other._duration);
-  }
- Duration operator *(num factor) {
-  return new Duration._microseconds((_duration * factor).round());
-  }
- Duration operator ~/(int quotient) {
-  if (quotient == 0) throw new IntegerDivisionByZeroException();
-   return new Duration._microseconds(_duration ~/ quotient);
-  }
- bool operator <(Duration other) => this._duration < other._duration;
- bool operator >(Duration other) => this._duration > other._duration;
- bool operator <=(Duration other) => this._duration <= other._duration;
- bool operator >=(Duration other) => this._duration >= other._duration;
- int get inDays => _duration ~/ Duration.MICROSECONDS_PER_DAY;
- int get inHours => _duration ~/ Duration.MICROSECONDS_PER_HOUR;
- int get inMinutes => _duration ~/ Duration.MICROSECONDS_PER_MINUTE;
- int get inSeconds => _duration ~/ Duration.MICROSECONDS_PER_SECOND;
- int get inMilliseconds => _duration ~/ Duration.MICROSECONDS_PER_MILLISECOND;
- int get inMicroseconds => _duration;
- bool operator ==(other) {
-  if (other is! Duration) return false;
-   return _duration == other._duration;
-  }
- int get hashCode => _duration.hashCode;
- int compareTo(Duration other) => _duration.compareTo(other._duration);
- String toString() {
-  String sixDigits(int n) {
-    if (n >= 100000) return "$n";
-     if (n >= 10000) return "0$n";
-     if (n >= 1000) return "00$n";
-     if (n >= 100) return "000$n";
-     if (n >= 10) return "0000$n";
-     return "00000$n";
-    }
-   String twoDigits(int n) {
-    if (n >= 10) return "$n";
-     return "0$n";
-    }
-   if (inMicroseconds < 0) {
-    return "-${-this}";
-    }
-   String twoDigitMinutes = twoDigits(((__x0) => DEVC$RT.cast(__x0, num, int, "ImplicitCast", """line 258, column 40 of dart:core/duration.dart: """, __x0 is int, true))(inMinutes.remainder(MINUTES_PER_HOUR)));
-   String twoDigitSeconds = twoDigits(((__x1) => DEVC$RT.cast(__x1, num, int, "ImplicitCast", """line 259, column 40 of dart:core/duration.dart: """, __x1 is int, true))(inSeconds.remainder(SECONDS_PER_MINUTE)));
-   String sixDigitUs = sixDigits(((__x2) => DEVC$RT.cast(__x2, num, int, "ImplicitCast", """line 261, column 19 of dart:core/duration.dart: """, __x2 is int, true))(inMicroseconds.remainder(MICROSECONDS_PER_SECOND)));
-   return "$inHours:$twoDigitMinutes:$twoDigitSeconds.$sixDigitUs";
-  }
- bool get isNegative => _duration < 0;
- Duration abs() => new Duration._microseconds(_duration.abs());
- Duration operator -() => new Duration._microseconds(-_duration);
-}