Move frog/tests/{leg,leg_only,frog_native} to tests/compiler/.

frog/tests/leg_only/index_test.dart

-// Copyright (c) 2011, 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.
-
-main() {
-  var a = [0];
-  Expect.equals(0, a[0]);
-
-  a = [1, 2];
-  Expect.equals(1, a[0]);
-  Expect.equals(2, a[1]);
-
-  a[0] = 42;
-  Expect.equals(42, a[0]);
-  Expect.equals(2, a[1]);
-
-  a[1] = 43;
-  Expect.equals(42, a[0]);
-  Expect.equals(43, a[1]);
-
-  a[1] += 2;
-  Expect.equals(45, a[1]);
-  a[1] -= a[1];
-  Expect.equals(0, a[1]);
-
-  var b = a[1]++;
-  Expect.equals(1, a[1]);
-  Expect.equals(0, b);
-
-  b = ++a[1];
-  Expect.equals(2, a[1]);
-  Expect.equals(2, b);
-
-  b = a[1]--;
-  Expect.equals(1, a[1]);
-  Expect.equals(2, b);
-
-  b = --a[1];
-  Expect.equals(0, a[1]);
-  Expect.equals(0, b);
-}