Parse harmony let declarations.

test/cctest/test-parsing.cc

Index: test/cctest/test-parsing.cc
diff --git a/test/cctest/test-parsing.cc b/test/cctest/test-parsing.cc
index 654c6cf73286e533a04bb0b281c50d658362f52b..db3e42b4d796a0bf3eea6c6839f2454ad33fdff5 100755
--- a/test/cctest/test-parsing.cc
+++ b/test/cctest/test-parsing.cc
@@ -65,6 +65,8 @@ TEST(ScanKeywords) {
       i::Utf8ToUC16CharacterStream stream(keyword, length);
       i::JavaScriptScanner scanner(&unicode_cache);
       scanner.Initialize(&stream);
+      // The scanner should parse 'let' as Token::LET for this test.
+      scanner.SetHarmonyBlockScoping(true);
       CHECK_EQ(key_token.token, scanner.Next());
       CHECK_EQ(i::Token::EOS, scanner.Next());
     }
@@ -287,7 +289,7 @@ TEST(RegressChromium62639) {
   i::Utf8ToUC16CharacterStream stream(reinterpret_cast<const i::byte*>(program),
                                       static_cast<unsigned>(strlen(program)));
   i::ScriptDataImpl* data =
-      i::ParserApi::PreParse(&stream, NULL);
+      i::ParserApi::PreParse(&stream, NULL, false);
   CHECK(data->HasError());
   delete data;
 }
@@ -311,7 +313,7 @@ TEST(Regress928) {
   i::Utf8ToUC16CharacterStream stream(reinterpret_cast<const i::byte*>(program),
                                       static_cast<unsigned>(strlen(program)));
   i::ScriptDataImpl* data =
-      i::ParserApi::PartialPreParse(&stream, NULL);
+      i::ParserApi::PartialPreParse(&stream, NULL, false);
   CHECK(!data->HasError());
 
   data->Initialize();