test rename overhaul: step 8 - language tests

tests/language/src/ListDoubleIndexInLoopTest.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.
-// Dart test program for testing arrays.
-
-bar() => true;
-
-// The type propagation in Dart2Js wrongly took the intersection of all incoming
-// types in a loop-phi. In this case the back-edge brought type 'number' which,
-// combined with 'integer' (i = 0) was narrowed to 'integer'. As a result no
-// check was inserted for the list access.
-foo(a) {
-  var i = 0;
-  while (true) {
-    if (i > 1) return a[i];
-    if (bar()) {
-      // Adding a double guarantees a double result. Therefore guard by an if.
-      i = i + 1.5;
-    }
-  }
-}
-
-main() {
-  Expect.throws(() => foo([1, 2]));
-}