ES6 unicode extensions, part 1.

src/preparser.h

Index: src/preparser.h
diff --git a/src/preparser.h b/src/preparser.h
index 8b78d46a3a0eda84af92d6ce51d2d05131dec774..c41ee1a41b0d9e0500d4611f05dfb6ad27870daa 100644
--- a/src/preparser.h
+++ b/src/preparser.h
@@ -102,6 +102,7 @@ class ParserBase : public Traits {
   bool allow_harmony_object_literals() const {
     return allow_harmony_object_literals_;
   }
+  bool allow_harmony_unicode() const { return scanner()->HarmonyUnicode(); }
 
   // Setters that determine whether certain syntactical constructs are
   // allowed to be parsed by this instance of the parser.
@@ -119,6 +120,9 @@ class ParserBase : public Traits {
   void set_allow_harmony_object_literals(bool allow) {
     allow_harmony_object_literals_ = allow;
   }
+  void set_allow_harmony_unicode(bool allow) {
+    scanner()->SetHarmonyUnicode(allow);
+  }
 
  protected:
   enum AllowEvalOrArgumentsAsIdentifier {