ES6 unicode extensions, part 1.

src/parser.cc

Index: src/parser.cc
diff --git a/src/parser.cc b/src/parser.cc
index 0301e40851d5c4da1f09b77ed0728517762fe997..0de4d8af238d107e2678efe35035a93c934637e0 100644
--- a/src/parser.cc
+++ b/src/parser.cc
@@ -810,6 +810,7 @@ Parser::Parser(CompilationInfo* info, ParseInfo* parse_info)
   set_allow_harmony_numeric_literals(FLAG_harmony_numeric_literals);
   set_allow_classes(FLAG_harmony_classes);
   set_allow_harmony_object_literals(FLAG_harmony_object_literals);
+  set_allow_harmony_unicode(FLAG_harmony_unicode);
   for (int feature = 0; feature < v8::Isolate::kUseCounterFeatureCount;
        ++feature) {
     use_counts_[feature] = 0;
@@ -3899,6 +3900,7 @@ PreParser::PreParseResult Parser::ParseLazyFunctionBodyWithPreParser(
     reusable_preparser_->set_allow_classes(allow_classes());
     reusable_preparser_->set_allow_harmony_object_literals(
         allow_harmony_object_literals());
+    reusable_preparser_->set_allow_harmony_unicode(allow_harmony_unicode());
   }
   PreParser::PreParseResult result =
       reusable_preparser_->PreParseLazyFunction(strict_mode(),