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

frog/tests/leg_only/this_phi_elimination_test.dart

Index: frog/tests/leg_only/this_phi_elimination_test.dart
===================================================================
--- frog/tests/leg_only/this_phi_elimination_test.dart	(revision 8644)
+++ frog/tests/leg_only/this_phi_elimination_test.dart	(working copy)
@@ -1,19 +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.
-
-class A {
-  foo(a) {
-    while (false) {
-      // This call will make the builder want to put this as a phi.
-      foo(0);
-    }
-    // This computation makes sure there will be a bailout version.
-    return a + 42;
-  }
-}
-
-main() {
-  Expect.equals(42, new A().foo(0));
-  Expect.equals("42", new A().foo(""));
-}