diff --git a/tests/lib_2/collection/failing_list_test.dart b/tests/lib_2/collection/failing_list_test.dart
deleted file mode 100644
index ad65e0d4e3a..00000000000
--- a/tests/lib_2/collection/failing_list_test.dart
+++ /dev/null
@@ -1,157 +0,0 @@
-// Copyright (c) 2013, 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.
-
-import 'dart:collection';
-import 'dart:io';
-import "package:expect/expect.dart";
-
-class MyList<E> extends ListBase<E> {
-  List<E> _list;
-
-  MyList(List<E> this._list);
-
-  int get length => _list.length;
-
-  void set length(int x) {
-    _list.length = x;
-  }
-
-  E operator [](int idx) => _list[idx];
-
-  void operator []=(int idx, E value) {
-    _list[idx] = value;
-  }
-}
-
-class MyNoSuchMethodList<E> extends Object
-    with ListMixin<E>
-    implements List<E> {
-  List<E> _list;
-
-  MyNoSuchMethodList(List<E> this._list);
-
-  noSuchMethod(Invocation invocation) {
-    if (invocation.memberName == #length && invocation.isGetter) {
-      return _list.length;
-    }
-    if (invocation.memberName == const Symbol("length=") &&
-        invocation.isSetter) {
-      _list.length = invocation.positionalArguments.first;
-      return null;
-    }
-    if (invocation.memberName == const Symbol("[]") &&
-        invocation.positionalArguments.length == 1) {
-      return _list[invocation.positionalArguments.first];
-    }
-    if (invocation.memberName == const Symbol("[]=") &&
-        invocation.positionalArguments.length == 2) {
-      _list[invocation.positionalArguments.first] =
-          invocation.positionalArguments[1];
-      return null;
-    }
-    return super.noSuchMethod(invocation);
-  }
-}
-
-// Class that behaves like a list but does not implement List.
-class MyIndexableNoSuchMethod<E> {
-  List<E> _list;
-
-  MyIndexableNoSuchMethod(List<E> this._list);
-
-  noSuchMethod(Invocation invocation) {
-    if (invocation.memberName == #length && invocation.isGetter) {
-      return _list.length;
-    }
-    if (invocation.memberName == const Symbol("length=") &&
-        invocation.isSetter) {
-      _list.length = invocation.positionalArguments.first;
-      return null;
-    }
-    if (invocation.memberName == const Symbol("prototype")) {
-      return 42;
-    }
-
-    if (invocation.memberName == const Symbol("[]") &&
-        invocation.positionalArguments.length == 1) {
-      return _list[invocation.positionalArguments.first];
-    }
-    if (invocation.memberName == const Symbol("[]=") &&
-        invocation.positionalArguments.length == 2) {
-      _list[invocation.positionalArguments.first] =
-          invocation.positionalArguments[1];
-      return null;
-    }
-    return super.noSuchMethod(invocation);
-  }
-}
-
-void testRetainWhere() {
-  List<int> list = <int>[1, 2, 3];
-  list.retainWhere((x) => x % 2 == 0);
-  Expect.equals(true, false);
-  Expect.equals(1, list.length);
-  Expect.equals(2, list.first);
-  Expect.equals(2, list[0]);
-
-  list = new MyList<int>([1, 2, 3]);
-  list.retainWhere((x) => x % 2 == 0);
-  Expect.equals(1, list.length);
-  Expect.equals(2, list.first);
-  Expect.equals(2, list[0]);
-
-  list = new MyNoSuchMethodList<int>([1, 2, 3]);
-  list.retainWhere((x) => x % 2 == 0);
-  Expect.equals(1, list.length);
-  Expect.equals(2, list.first);
-  Expect.equals(2, list[0]);
-
-  // Equivalent tests where the type of the List is known statically.
-  {
-    var l = new MyList<int>([1, 2, 3]);
-    l.retainWhere((x) => x % 2 == 0);
-    Expect.equals(1, l.length);
-    Expect.equals(2, l.first);
-    Expect.equals(2, l[0]);
-  }
-
-  {
-    var l = new MyNoSuchMethodList<int>([1, 2, 3]);
-    l.retainWhere((x) => x % 2 == 0);
-    Expect.equals(1, l.length);
-    Expect.equals(2, l.first);
-    Expect.equals(2, l[0]);
-  }
-
-  // Equivalent tests where the type of the List is not known.
-  {
-    dynamic l = new MyList<int>([1, 2, 3]);
-    l.retainWhere((x) => x % 2 == 0);
-    Expect.equals(1, l.length);
-    Expect.equals(2, l.first);
-    Expect.equals(2, l[0]);
-  }
-
-  {
-    dynamic l = new MyNoSuchMethodList<int>([1, 2, 3]);
-    l.retainWhere((x) => x % 2 == 0);
-    Expect.equals(1, l.length);
-    Expect.equals(2, l.first);
-    Expect.equals(2, l[0]);
-  }
-
-  {
-    dynamic indexable = new MyIndexableNoSuchMethod<int>([1, 2, 3]);
-    Expect.equals(3, indexable.length);
-    Expect.equals(1, indexable[0]);
-    Expect.equals(3, indexable[2]);
-    indexable.length = 2;
-    Expect.equals(2, indexable.length);
-    Expect.equals(42, indexable.prototype);
-  }
-}
-
-void main() {
-  testRetainWhere();
-}
diff --git a/tests/lib_2/lib_2.status b/tests/lib_2/lib_2.status
index da3fa04eea8..a592e6a2890 100644
--- a/tests/lib_2/lib_2.status
+++ b/tests/lib_2/lib_2.status
@@ -30,9 +30,6 @@ html/xhr_test/xhr: Skip # Times out.  Issue 21527
 [ $csp ]
 isolate/deferred_in_isolate2_test: Skip # Issue 16898. Deferred loading does not work from an isolate in CSP-mode
 
-[ $compiler != dart2analyzer && !$csp ]
-collection/failing_list_test: Skip # This test is only testing the approval UI. It will be reverted quickly.
-
 [ $runtime == chrome && $system == linux ]
 mirrors/native_class_test: Slow