Split StringLiteral from Literal.

src/preparser.h

Index: src/preparser.h
diff --git a/src/preparser.h b/src/preparser.h
index 9dee863d591191a40de0a78d7d191347f9bc3966..527bb858a006dd02e71606e487814fcc825fcfbe 100644
--- a/src/preparser.h
+++ b/src/preparser.h
@@ -744,8 +744,8 @@ class PreParserScope {
 class PreParserFactory {
  public:
   explicit PreParserFactory(void* extra_param) {}
-  PreParserExpression NewLiteral(PreParserIdentifier identifier,
-                                 int pos) {
+  PreParserExpression NewStringLiteral(PreParserIdentifier identifier,
+                                       int pos) {
     return PreParserExpression::Default();
   }
   PreParserExpression NewNumberLiteral(double number,
@@ -1575,7 +1575,7 @@ typename ParserBase<Traits>::ExpressionT ParserBase<Traits>::ParseObjectLiteral(
         }
         // Failed to parse as get/set property, so it's just a normal property
         // (which might be called "get" or "set" or something else).
-        key = factory()->NewLiteral(id, next_pos);
+        key = factory()->NewStringLiteral(id, next_pos);
         break;
       }
       case Token::STRING: {
@@ -1587,7 +1587,7 @@ typename ParserBase<Traits>::ExpressionT ParserBase<Traits>::ParseObjectLiteral(
           key = factory()->NewNumberLiteral(index, next_pos);
           break;
         }
-        key = factory()->NewLiteral(string, next_pos);
+        key = factory()->NewStringLiteral(string, next_pos);
         break;
       }
       case Token::NUMBER: {
@@ -1600,7 +1600,7 @@ typename ParserBase<Traits>::ExpressionT ParserBase<Traits>::ParseObjectLiteral(
         if (Token::IsKeyword(next)) {
           Consume(next);
           IdentifierT string = this->GetSymbol(scanner_);
-          key = factory()->NewLiteral(string, next_pos);
+          key = factory()->NewStringLiteral(string, next_pos);
         } else {
           Token::Value next = Next();
           ReportUnexpectedToken(next);
@@ -1969,7 +1969,7 @@ ParserBase<Traits>::ParseLeftHandSideExpression(bool* ok) {
         int pos = position();
         IdentifierT name = ParseIdentifierName(CHECK_OK);
         result = factory()->NewProperty(
-            result, factory()->NewLiteral(name, pos), pos);
+            result, factory()->NewStringLiteral(name, pos), pos);
         if (fni_ != NULL) this->PushLiteralName(fni_, name);
         break;
       }
@@ -2091,7 +2091,7 @@ ParserBase<Traits>::ParseMemberExpressionContinuation(ExpressionT expression,
         int pos = position();
         IdentifierT name = ParseIdentifierName(CHECK_OK);
         expression = factory()->NewProperty(
-            expression, factory()->NewLiteral(name, pos), pos);
+            expression, factory()->NewStringLiteral(name, pos), pos);
         if (fni_ != NULL) {
           this->PushLiteralName(fni_, name);
         }