Reland of Ship ES2015 sloppy-mode function hoisting, let, class

test/mjsunit/es6/block-early-errors.js

Index: test/mjsunit/es6/block-early-errors.js
diff --git a/test/mjsunit/es6/block-early-errors.js b/test/mjsunit/es6/block-early-errors.js
index bf24942bb1ce8a0f9237deae0763eef8c4efd083..4af6521f6470228faffb5a7f146a86c724eca461 100644
--- a/test/mjsunit/es6/block-early-errors.js
+++ b/test/mjsunit/es6/block-early-errors.js
@@ -25,6 +25,8 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
+// Flags: --no-harmony-sloppy-let
+
 function CheckException(e) {
   var string = e.toString();
   assertInstanceof(e, SyntaxError);