Create IterableMixinWorkaround and move most of the Collections methods there.

tests/corelib/iterable_min_max_test.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.
 
 library iterable_min_max_test;
 
 import "dart:collection";
 
 class C {
   final x;
   const C(this.x);
   int get hashCode => x.hashCode;
   bool operator==(var other) => other is C && x == other.x;
 }
 
 const inf = double.INFINITY;
 
 var intList = const [0, 1, -1, -5, 5, -1000, 1000, -7, 7];
 var doubleList = const [-0.0, 0.0, -1.0, 1.0, -1000.0, 1000.0, -inf, inf];
 var stringList = const ["bbb", "bba", "bab", "abb", "bbc", "bcb", "cbb", "bb"];
 var cList = const [const C(5), const C(3), const C(8),
                    const C(0), const C(10), const C(6)];
 int compareC(C a, C b) => a.x.compareTo(b.x);
 
 
 testMinMax(iterable, min, max) {
   Expect.equals(min, iterable.min());
   Expect.equals(min, iterable.min(Comparable.compare));
-  Expect.equals(min, Collections.min(iterable));
-  Expect.equals(min, Collections.min(iterable, Comparable.compare));
+  Expect.equals(min, IterableMixinWorkaround.min(iterable));
+  Expect.equals(min, IterableMixinWorkaround.min(iterable, Comparable.compare));
   Expect.equals(max, iterable.min((a, b) => Comparable.compare(b, a)));
 
   Expect.equals(max, iterable.max());
   Expect.equals(max, iterable.max(Comparable.compare));
-  Expect.equals(max, Collections.max(iterable));
-  Expect.equals(max, Collections.max(iterable, Comparable.compare));
+  Expect.equals(max, IterableMixinWorkaround.max(iterable));
+  Expect.equals(max, IterableMixinWorkaround.max(iterable, Comparable.compare));
   Expect.equals(min, iterable.max((a, b) => Comparable.compare(b, a)));
 }
 
 
 main() {
   testMinMax(const [], null, null);
   testMinMax([], null, null);
   testMinMax(new Set(), null, null);
 
   testMinMax(intList, -1000, 1000);  // Const list.
   testMinMax(new List.from(intList), -1000, 1000);  // Non-const list.
   testMinMax(new Set.from(intList), -1000, 1000);  // Set.
 
   testMinMax(doubleList, -inf, inf);
   testMinMax(new List.from(doubleList), -inf, inf);
   testMinMax(new Set.from(doubleList), -inf, inf);
 
   testMinMax(stringList, "abb", "cbb");
   testMinMax(new List.from(stringList), "abb", "cbb");
   testMinMax(new Set.from(stringList), "abb", "cbb");
 
   // Objects that are not Comparable.
   Expect.equals(const C(0), cList.min(compareC));
-  Expect.equals(const C(0), Collections.min(cList, compareC));
+  Expect.equals(const C(0), IterableMixinWorkaround.min(cList, compareC));
   Expect.equals(const C(0), new List.from(cList).min(compareC));
-  Expect.equals(const C(0), Collections.min(new List.from(cList), compareC));
+  Expect.equals(const C(0), IterableMixinWorkaround.min(new List.from(cList), compareC));
   Expect.equals(const C(0), new Set.from(cList).min(compareC));
-  Expect.equals(const C(0), Collections.min(new Set.from(cList), compareC));
+  Expect.equals(const C(0), IterableMixinWorkaround.min(new Set.from(cList), compareC));
 
   Expect.equals(const C(10), cList.max(compareC));
-  Expect.equals(const C(10), Collections.max(cList, compareC));
+  Expect.equals(const C(10), IterableMixinWorkaround.max(cList, compareC));
   Expect.equals(const C(10), new List.from(cList).max(compareC));
-  Expect.equals(const C(10), Collections.max(new List.from(cList), compareC));
+  Expect.equals(const C(10), IterableMixinWorkaround.max(new List.from(cList), compareC));
   Expect.equals(const C(10), new Set.from(cList).max(compareC));
-  Expect.equals(const C(10), Collections.max(new Set.from(cList), compareC));
+  Expect.equals(const C(10), IterableMixinWorkaround.max(new Set.from(cList), compareC));
 
   bool checkedMode = false;
   assert(checkedMode = true);
   Expect.throws(cList.min, (e) => checkedMode ? e is TypeError
                                               : e is NoSuchMethodError);
   Expect.throws(cList.max, (e) => checkedMode ? e is TypeError
                                               : e is NoSuchMethodError);
 }