[generators] Desugar yield*.

src/parsing/parser.h

Index: src/parsing/parser.h
diff --git a/src/parsing/parser.h b/src/parsing/parser.h
index c37953f04ad3c24480d8f57303e2ade4340ae02c..2f0272bd3668fc4958233ec8f8b94bdef6105b5d 100644
--- a/src/parsing/parser.h
+++ b/src/parsing/parser.h
@@ -658,8 +658,14 @@ class ParserTraits {
       ObjectLiteralProperty* property, const ExpressionClassifier* classifier,
       bool* ok);
 
+  Expression* RewriteYieldStar(
+      Expression* generator, Expression* expression, int pos);
+
  private:
   Parser* parser_;
+
+  void BuildIteratorClose(ZoneList<Statement*>* statements, Variable* iterator,
+                          Maybe<Variable*> input);
 };
 
 
@@ -756,6 +762,7 @@ class Parser : public ParserBase<ParserTraits> {
                                 ZoneList<const AstRawString*>* names,
                                 bool* ok);
   DoExpression* ParseDoExpression(bool* ok);
+  Expression* ParseYieldStarExpression(bool* ok);
 
   struct DeclarationDescriptor {
     enum Kind { NORMAL, PARAMETER };