Call JS functions via native context instead of js builtins object.

src/prettyprinter.cc

Index: src/prettyprinter.cc
diff --git a/src/prettyprinter.cc b/src/prettyprinter.cc
index e71489fa7f2c401111468f7de94d55bf24075a4a..939f5745a76f4b9ea2f6b7bacf538d912b80c63d 100644
--- a/src/prettyprinter.cc
+++ b/src/prettyprinter.cc
@@ -795,8 +795,7 @@ void PrettyPrinter::VisitCallNew(CallNew* node) {
 
 
 void PrettyPrinter::VisitCallRuntime(CallRuntime* node) {
-  Print("%%");
-  PrintLiteral(node->name(), false);
+  Print("%%%s\n", node->function()->name);
   PrintArguments(node->arguments());
 }
 
@@ -1523,9 +1522,8 @@ void AstPrinter::VisitCallNew(CallNew* node) {
 
 void AstPrinter::VisitCallRuntime(CallRuntime* node) {
   EmbeddedVector<char, 128> buf;
-  FormatICSlotNode(&buf, node, "CALL RUNTIME", node->CallRuntimeFeedbackSlot());
   IndentedScope indent(this, buf.start());
-  PrintLiteralIndented("NAME", node->name(), false);
+  Print("NAME %s\n", node->function()->name);
   PrintArguments(node->arguments());
 }