Migrate language block 46 - canonical_const ... char_escape.

tests/language/cascade_in_initializer_list_test.dart

Index: tests/language/cascade_in_initializer_list_test.dart
diff --git a/tests/language/cascade_in_initializer_list_test.dart b/tests/language/cascade_in_initializer_list_test.dart
deleted file mode 100644
index 37da002baf6cfd2687f75c14e099f81716d43d9f..0000000000000000000000000000000000000000
--- a/tests/language/cascade_in_initializer_list_test.dart
+++ /dev/null
@@ -1,29 +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 "package:expect/expect.dart";
-
-class A {
-  foo() {}
-  bar() {}
-}
-
-class B {
-  var x;
-  final y;
-
-  B(a)
-      : x = a
-          ..foo()
-          ..bar(),
-        y = a
-          ..foo()
-          ..bar() {}
-}
-
-main() {
-  var a = new A(), b = new B(a);
-  Expect.equals(a, b.x);
-  Expect.equals(a, b.y);
-}