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

frog/tests/leg/field_codegen_test.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 that parameters keep their names in the output.
-
-#import("compiler_helper.dart");
-#import("parser_helper.dart");
-
-final String TEST_NULL0 = @"""
-class A { static var x; }
-
-main() { return A.x; }
-""";
-
-final String TEST_NULL1 = @"""
-var x;
-
-main() { return x; }
-""";
-
-main() {
-  String generated = compileAll(TEST_NULL0);
-  Expect.isTrue(generated.contains("(void 0)"));
-  generated = compileAll(TEST_NULL1);
-  Expect.isTrue(generated.contains("(void 0)"));
-}