Migrate test block 9 to Dart 2.0

tests/corelib_strong/int_floor_test.dart

Index: tests/corelib_strong/int_floor_test.dart
diff --git a/tests/corelib_strong/int_floor_test.dart b/tests/corelib_strong/int_floor_test.dart
deleted file mode 100644
index 4b235b47a74da2c713f7537521f4df319eb25a21..0000000000000000000000000000000000000000
--- a/tests/corelib_strong/int_floor_test.dart
+++ /dev/null
@@ -1,39 +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(0, 0.floor());
-  Expect.equals(1, 1.floor());
-  Expect.equals(0x1234, 0x1234.floor());
-  Expect.equals(0x12345678, 0x12345678.floor());
-  Expect.equals(0x123456789AB, 0x123456789AB.floor());
-  Expect.equals(0x123456789ABCDEF, 0x123456789ABCDEF.floor());
-  Expect.equals(0x123456789ABCDEF0123456789ABCDEF0123456789ABCDEF,
-      0x123456789ABCDEF0123456789ABCDEF0123456789ABCDEF.floor());
-  Expect.equals(-1, -1.floor());
-  Expect.equals(-0x1234, -0x1234.floor());
-  Expect.equals(-0x12345678, -0x12345678.floor());
-  Expect.equals(-0x123456789AB, -0x123456789AB.floor());
-  Expect.equals(-0x123456789ABCDEF, -0x123456789ABCDEF.floor());
-  Expect.equals(-0x123456789ABCDEF0123456789ABCDEF0123456789ABCDEF,
-      -0x123456789ABCDEF0123456789ABCDEF0123456789ABCDEF.floor());
-
-  Expect.isTrue(0.floor() is int);
-  Expect.isTrue(1.floor() is int);
-  Expect.isTrue(0x1234.floor() is int);
-  Expect.isTrue(0x12345678.floor() is int);
-  Expect.isTrue(0x123456789AB.floor() is int);
-  Expect.isTrue(0x123456789ABCDEF.floor() is int);
-  Expect
-      .isTrue(0x123456789ABCDEF0123456789ABCDEF0123456789ABCDEF.floor() is int);
-  Expect.isTrue(-1.floor() is int);
-  Expect.isTrue(-0x1234.floor() is int);
-  Expect.isTrue(-0x12345678.floor() is int);
-  Expect.isTrue(-0x123456789AB.floor() is int);
-  Expect.isTrue(-0x123456789ABCDEF.floor() is int);
-  Expect.isTrue(
-      -0x123456789ABCDEF0123456789ABCDEF0123456789ABCDEF.floor() is int);
-}