Revert of There are only 2 language modes, not 3

test/unittests/compiler/js-typed-lowering-unittest.cc

Index: test/unittests/compiler/js-typed-lowering-unittest.cc
diff --git a/test/unittests/compiler/js-typed-lowering-unittest.cc b/test/unittests/compiler/js-typed-lowering-unittest.cc
index 6b418d706d99e21ac50210f27f6fae2c31b9cd2d..8ab5d8fbf3e8289980d23993323da90da99ca4be 100644
--- a/test/unittests/compiler/js-typed-lowering-unittest.cc
+++ b/test/unittests/compiler/js-typed-lowering-unittest.cc
@@ -65,7 +65,8 @@
 Type* const kJSTypes[] = {Type::Undefined(), Type::Null(),   Type::Boolean(),
                           Type::Number(),    Type::String(), Type::Object()};
 
-STATIC_ASSERT(LANGUAGE_END == 2);
+
+STATIC_ASSERT(LANGUAGE_END == 3);
 const LanguageMode kLanguageModes[] = {SLOPPY, STRICT};
 
 }  // namespace