ES6 unicode extensions, part 1.

src/preparser.h

Index: src/preparser.h
diff --git a/src/preparser.h b/src/preparser.h
index b50019c0e406c7822ec1fcfb6abcbafb623d655d..cef5b9473485d715439db147c147dc89531b8eac 100644
--- a/src/preparser.h
+++ b/src/preparser.h
@@ -107,6 +107,7 @@ class ParserBase : public Traits {
   }
   bool allow_harmony_templates() const { return scanner()->HarmonyTemplates(); }
   bool allow_harmony_sloppy() const { return allow_harmony_sloppy_; }
+  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.
@@ -136,6 +137,9 @@ class ParserBase : public Traits {
   void set_allow_harmony_sloppy(bool allow) {
     allow_harmony_sloppy_ = allow;
   }
+  void set_allow_harmony_unicode(bool allow) {
+    scanner()->SetHarmonyUnicode(allow);
+  }
 
  protected:
   enum AllowEvalOrArgumentsAsIdentifier {