[Parser] Don't internalize on-the-fly.

src/parsing/parser.cc

Index: src/parsing/parser.cc
diff --git a/src/parsing/parser.cc b/src/parsing/parser.cc
index c608c7ea1dcd7f19f7183a785e38f0d2274f9729..d85286c280fe237eeca1e3d233eabd8880947003 100644
--- a/src/parsing/parser.cc
+++ b/src/parsing/parser.cc
@@ -4386,7 +4386,7 @@ void Parser::HandleSourceURLComments(Isolate* isolate, Handle<Script> script) {
 
 
 void Parser::Internalize(Isolate* isolate, Handle<Script> script, bool error) {
-  // Internalize strings.
+  // Internalize strings and values.
   ast_value_factory()->Internalize(isolate);
 
   // Error processing.
@@ -4453,7 +4453,6 @@ bool Parser::Parse(ParseInfo* info) {
   info->set_literal(result);
 
   Internalize(isolate, info->script(), result == NULL);
-  DCHECK(ast_value_factory()->IsInternalized());
   return (result != NULL);
 }
 
@@ -5995,13 +5994,6 @@ Statement* Parser::FinalizeForOfStatement(ForOfStatement* loop,
   return final_loop;
 }
 
-#ifdef DEBUG
-void Parser::Print(AstNode* node) {
-  ast_value_factory()->Internalize(Isolate::Current());
-  node->Print(Isolate::Current());
-}
-#endif  // DEBUG
-
 #undef CHECK_OK
 #undef CHECK_OK_VOID
 #undef CHECK_FAILED