Add min and max to Iterable and Stream.

runtime/lib/byte_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.
 
 patch class Int8List {
   /* patch */ factory Int8List(int length) {
     return new _Int8Array(length);
   }
 
   /* patch */ factory Int8List.transferable(int length) {
@@ skipping 305 matching lines @@
     if (length > 0) return this[length - 1];
     throw new StateError("No elements");
   }
 
   int get single {
     if (length == 1) return this[0];
     if (length == 0) throw new StateError("No elements");
     throw new StateError("More than one element");
   }
 
+  int min([int compare(int a, int b)]) => Collections.min(this, compare);
+
+  int max([int compare(int a, int b)]) => Collections.max(this, compare);
+
   void removeRange(int start, int length) {
     throw new UnsupportedError(
         "Cannot remove from a non-extendable array");
   }
 
   void insertRange(int start, int length, [initialValue]) {
     throw new UnsupportedError(
         "Cannot add to a non-extendable array");
   }
 
@@ skipping 2333 matching lines @@
     }
     _rangeCheck(this.length, start, length);
     return _array.subByteArray(_offset + start, length);
   }
 
   static const int _BYTES_PER_ELEMENT = 8;
   final ByteArray _array;
   final int _offset;
   final int _length;
 }