Added new version of reduce.

sdk/lib/_internal/compiler/implementation/lib/js_array.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 part of _interceptors;
 
 /**
  * The interceptor class for [List]. The compiler recognizes this
  * class as an interceptor, and changes references to [:this:] to
  * actually use the receiver of the method, which is generated as an extra
@@ skipping 102 matching lines @@
   }
 
   Iterable<E> skip(int n) {
     return IterableMixinWorkaround.skipList(this, n);
   }
 
   Iterable<E> skipWhile(bool test(E value)) {
     return IterableMixinWorkaround.skipWhile(this, test);
   }
 
-  reduce(initialValue, combine(previousValue, E element)) {
-    return IterableMixinWorkaround.reduce(this, initialValue, combine);
+  E reduce(E combine(E value, E element)) {
+    return IterableMixinWorkaround.reduce(this, combine);
   }
 
   fold(initialValue, combine(previousValue, E element)) {
     return IterableMixinWorkaround.fold(this, initialValue, combine);
   }
 
   E firstWhere(bool test(E value), {E orElse()}) {
     return IterableMixinWorkaround.firstWhere(this, test, orElse);
   }
 
@@ skipping 70 matching lines @@
     if (length > 0) return this[length - 1];
     throw new StateError("No elements");
   }
 
   E get single {
     if (length == 1) return this[0];
     if (length == 0) throw new StateError("No elements");
     throw new StateError("More than one element");
   }
 
-  E min([int compare(E a, E b)]) => IterableMixinWorkaround.min(this, compare);
-
-  E max([int compare(E a, E b)]) => IterableMixinWorkaround.max(this, compare);
-
   void removeRange(int start, int length) {
     checkGrowable(this, 'removeRange');
     if (length == 0) {
       return;
     }
     checkNull(start); // TODO(ahe): This is not specified but co19 tests it.
     checkNull(length); // TODO(ahe): This is not specified but co19 tests it.
     if (start is !int) throw new ArgumentError(start);
     if (length is !int) throw new ArgumentError(length);
     if (length < 0) throw new ArgumentError(length);
@@ skipping 88 matching lines @@
   }
 }
 
 /**
  * Dummy subclasses that allow the backend to track more precise
  * information about arrays through their type.
  */
 class JSMutableArray extends JSArray {}
 class JSFixedArray extends JSMutableArray {}
 class JSExtendableArray extends JSMutableArray {}