Extend scanner with new Harmony module keywords (under flag).

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 1b6e4ab9a15089a14edf578c2394af4e6728b866..cd8a6aff382934ae11c8ce45212e967f6c1fedd7 100755
--- a/test/cctest/test-parsing.cc
+++ b/test/cctest/test-parsing.cc
@@ -65,8 +65,9 @@ TEST(ScanKeywords) {
     {
       i::Utf8ToUC16CharacterStream stream(keyword, length);
       i::Scanner scanner(&unicode_cache);
-      // The scanner should parse 'let' as Token::LET for this test.
+      // The scanner should parse Harmony keywords for this test.
       scanner.SetHarmonyScoping(true);
+      scanner.SetHarmonyModules(true);
       scanner.Initialize(&stream);
       CHECK_EQ(key_token.token, scanner.Next());
       CHECK_EQ(i::Token::EOS, scanner.Next());