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

frog/tests/leg/redundant_phi_eliminator_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.
-
-#import("compiler_helper.dart");
-
-final String TEST_ONE = @"""
-void foo(bar) {
-  var toBeRemoved = 1;
-  if (bar) {
-  } else {
-  }
-  print(toBeRemoved);
-}
-""";
-
-
-final String TEST_TWO = @"""
-void foo() {
-  var temp = 0;
-  var toBeRemoved = temp;
-  for (var i = 0; i == 0; i = i + 1) {
-    toBeRemoved = temp;
-  }
-  print(toBeRemoved);
-}
-""";
-
-main() {
-  String generated = compile(TEST_ONE, 'foo');
-  RegExp regexp = const RegExp("toBeRemoved");
-  Expect.isTrue(!regexp.hasMatch(generated));
-
-  generated = compile(TEST_TWO, 'foo');
-  regexp = const RegExp("toBeRemoved");
-  Expect.isTrue(!regexp.hasMatch(generated));
-  regexp = const RegExp("temp");
-  Expect.isTrue(!regexp.hasMatch(generated));
-}