Migrate language block 46 - canonical_const ... char_escape.

tests/language_2/canonical_const_test.dart

Index: tests/language_2/canonical_const_test.dart
diff --git a/tests/language/canonical_const_test.dart b/tests/language_2/canonical_const_test.dart
similarity index 91%
rename from tests/language/canonical_const_test.dart
rename to tests/language_2/canonical_const_test.dart
index 14041a84140b205a09481a30f9e378bf931737fd..d759f9465d8b73481078f2a1c71e787bf953cb20 100644
--- a/tests/language/canonical_const_test.dart
+++ b/tests/language_2/canonical_const_test.dart
@@ -22,8 +22,6 @@ class CanonicalConstTest {
     Expect.identical(A, const C1());
     Expect.isFalse(identical(const C1(), const C2()));
     Expect.identical(B, const C2());
-    // TODO(johnlenz): these two values don't currently have the same type
-    // Expect.identical(const [1,2], const List[1,2]);
     Expect.isFalse(identical(const [2, 1], const [1, 2]));
     Expect.identical(const <int>[1, 2], const <int>[1, 2]);
     Expect.identical(const <Object>[1, 2], const <Object>[1, 2]);