Migrate the language tests up to arithmetic_test.

tests/language_strong/abstract_method_test.dart

Index: tests/language_strong/abstract_method_test.dart
diff --git a/tests/language_strong/abstract_method_test.dart b/tests/language_strong/abstract_method_test.dart
deleted file mode 100644
index 05370d28d31f8fd4e4d061541a152250f1d27c5e..0000000000000000000000000000000000000000
--- a/tests/language_strong/abstract_method_test.dart
+++ /dev/null
@@ -1,45 +0,0 @@
-// Copyright (c) 2014, 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 "package:expect/expect.dart";
-
-// Checks that abstract instance methods are correctly resolved.
-
-int get length => throw "error: top-level getter called";
-set height(x) {
-  throw "error: top-level setter called";
-}
-
-width() {
-  throw "error: top-level function called";
-}
-
-abstract class A {
-  int get length; //    Abstract instance getter.
-  set height(int x); // Abstract instance setter.
-  int width(); //       Abstract instance method.
-
-  // Must resolve to non-abstract length getter in subclass.
-  get useLength => length;
-  // Must resolve to non-abstract height setter in subclass.
-  setHeight(x) => height = x;
-  // Must resolve to non-abstract width() method in subclass.
-  useWidth() => width();
-}
-
-class A1 extends A {
-  int length; // Implies a length getter.
-  int height; // Implies a height setter.
-  int width() => 345;
-  A1(this.length);
-}
-
-main() {
-  var a = new A1(123);
-  Expect.equals(123, a.useLength);
-  a.setHeight(234);
-  Expect.equals(234, a.height);
-  Expect.equals(345, a.useWidth());
-  print([a.useLength, a.height, a.useWidth()]);
-}