Migrate test block 30 + corelib portion of block 31 to Dart 2.0.

tests/corelib_strong/toInt_test.dart

Index: tests/corelib_strong/toInt_test.dart
diff --git a/tests/corelib_strong/toInt_test.dart b/tests/corelib_strong/toInt_test.dart
deleted file mode 100644
index 0261d7da0a6e5e50818a63c451281f15d93ebc0b..0000000000000000000000000000000000000000
--- a/tests/corelib_strong/toInt_test.dart
+++ /dev/null
@@ -1,20 +0,0 @@
-// Copyright (c) 2013, 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";
-
-main() {
-  Expect.equals(-0x80000001, (-0x80000001).toInt());
-  Expect.equals(-0x80000000, (-0x80000000 - 0.7).toInt());
-  Expect.equals(-0x80000000, (-0x80000000 - 0.3).toInt());
-  Expect.equals(-0x7FFFFFFF, (-0x80000000 + 0.3).toInt());
-  Expect.equals(-0x7FFFFFFF, (-0x80000000 + 0.7).toInt());
-  Expect.equals(-0x7FFFFFFF, (-0x7FFFFFFF).toInt());
-  Expect.equals(0x7FFFFFFE, (0x7FFFFFFE).toInt());
-  Expect.equals(0x7FFFFFFE, (0x7FFFFFFF - 0.7).toInt());
-  Expect.equals(0x7FFFFFFE, (0x7FFFFFFF - 0.3).toInt());
-  Expect.equals(0x7FFFFFFF, (0x7FFFFFFF + 0.3).toInt());
-  Expect.equals(0x7FFFFFFF, (0x7FFFFFFF + 0.7).toInt());
-  Expect.equals(0x80000000, 0x80000000.toInt());
-}