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

frog/tests/leg/string_escapes_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");
-
-// Test that the compiler handles string literals containing line terminators.
-
-String compileExpression(String expression) {
-  var source = "foo() { return $expression; }";
-  return compile(source, "foo");
-}
-
-main() {
-  String generated = compileExpression("''' \n\r\u2028\u2029'''");
-  Expect.isTrue(generated.contains(@"\n\r\u2028\u2029"));
-
-  generated = compileExpression("@''' \n\r\u2028\u2029'''");
-  Expect.isTrue(generated.contains(@"\n\r\u2028\u2029"));
-
-  generated = compileExpression("'\u2028\u2029'");
-  Expect.isTrue(generated.contains(@"\u2028\u2029"));
-}