Add initial parser support for harmony iteration

src/prettyprinter.cc

Index: src/prettyprinter.cc
diff --git a/src/prettyprinter.cc b/src/prettyprinter.cc
index 3a1eca7c6b1759b55312fddd5b92b9f609050409..23cad956927686ea98f7664f49a66ff288988196 100644
--- a/src/prettyprinter.cc
+++ b/src/prettyprinter.cc
@@ -255,6 +255,17 @@ void PrettyPrinter::VisitForInStatement(ForInStatement* node) {
 }
 
 
+void PrettyPrinter::VisitForOfStatement(ForOfStatement* node) {
+  PrintLabels(node->labels());
+  Print("for (");
+  Visit(node->each());
+  Print(" of ");
+  Visit(node->iterable());
+  Print(") ");
+  Visit(node->body());
+}
+
+
 void PrettyPrinter::VisitTryCatchStatement(TryCatchStatement* node) {
   Print("try ");
   Visit(node->try_block());
@@ -929,6 +940,14 @@ void AstPrinter::VisitForInStatement(ForInStatement* node) {
 }
 
 
+void AstPrinter::VisitForOfStatement(ForOfStatement* node) {
+  IndentedScope indent(this, "FOR OF");
+  PrintIndentedVisit("FOR", node->each());
+  PrintIndentedVisit("OF", node->iterable());
+  PrintIndentedVisit("BODY", node->body());
+}
+
+
 void AstPrinter::VisitTryCatchStatement(TryCatchStatement* node) {
   IndentedScope indent(this, "TRY CATCH");
   PrintIndentedVisit("TRY", node->try_block());