Correct file names for tests in tests/language.

tests/language/optimized_constant_array_string_access.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.
-
-// Test optimized constant string and constant array access.
-
-int testConstantStringAndIndexCharCodeAt() {
-  int test(b) {
-    if (b) return "hest".charCodeAt(400);
-    return "hest".charCodeAt(2);
-  }
-
-  Expect.throws(() => test(true));
-  for (int i = 0; i < 10000; i++) test(false);
-  Expect.throws(() => test(true));
-}
-
-
-int testConstantArrayAndIndexAt() {
-  int test(b) {
-    var a = const [1,2,3,4];
-    if (b) return a[400];
-    return a[2];
-  }
-
-  Expect.throws(() => test(true));
-  for (int i = 0; i < 10000; i++) test(false);
-  Expect.throws(() => test(true));
-}
-
-
-foo(a) {
-  if (a == 1) { return 2; }
-  var aa = const [1, 2];
-  return aa[2.3];
-}
-
-
-int testNonSmiIndex() {
-  for (int i = 0; i < 10000; i++) { foo(1); }
-  Expect.throws(() => foo(2));
-}
-
-
-main() {
-  testConstantStringAndIndexCharCodeAt();
-  testConstantArrayAndIndexAt();
-  testNonSmiIndex();
-}