Migrate language block 46 - canonical_const ... char_escape.

tests/language/cascade_in_expression_function_test.dart

Index: tests/language/cascade_in_expression_function_test.dart
diff --git a/tests/language/cascade_in_expression_function_test.dart b/tests/language/cascade_in_expression_function_test.dart
deleted file mode 100644
index 88f952978581c13f58a2d8f16ff06aff21b4da5b..0000000000000000000000000000000000000000
--- a/tests/language/cascade_in_expression_function_test.dart
+++ /dev/null
@@ -1,26 +0,0 @@
-// 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.
-// Dart test program for testing throw statement
-
-import "package:expect/expect.dart";
-
-makeMap() => new Map()
-  ..[3] = 4
-  ..[0] = 11;
-
-class MyClass {
-  foo() => this
-    ..bar(3)
-    ..baz(4);
-  bar(x) => x;
-  baz(y) => y * 2;
-}
-
-main() {
-  var o = new MyClass();
-  Expect.equals(o.foo(), o);
-  var g = makeMap();
-  Expect.equals(g[3], 4);
-  Expect.equals(g[0], 11);
-}