Move ParsePostfixExpression into ParserBase.

src/preparser.cc

Index: src/preparser.cc
diff --git a/src/preparser.cc b/src/preparser.cc
index 474e642ad350a07272d9b04e70766a6610716df9..9480af6fbad0db414152485a00c482df211ef140 100644
--- a/src/preparser.cc
+++ b/src/preparser.cc
@@ -146,8 +146,8 @@ PreParserExpression PreParserTraits::ParseFunctionLiteral(
 }
 
 
-PreParserExpression PreParserTraits::ParsePostfixExpression(bool* ok) {
-  return pre_parser_->ParsePostfixExpression(ok);
+PreParserExpression PreParserTraits::ParseLeftHandSideExpression(bool* ok) {
+  return pre_parser_->ParseLeftHandSideExpression(ok);
 }
 
 
@@ -842,23 +842,6 @@ PreParser::Statement PreParser::ParseDebuggerStatement(bool* ok) {
 #undef DUMMY
 
 
-PreParser::Expression PreParser::ParsePostfixExpression(bool* ok) {
-  // PostfixExpression ::
-  //   LeftHandSideExpression ('++' | '--')?
-
-  Expression expression = ParseLeftHandSideExpression(CHECK_OK);
-  if (!scanner()->HasAnyLineTerminatorBeforeNext() &&
-      Token::IsCountOp(peek())) {
-    if (strict_mode() == STRICT) {
-      CheckStrictModeLValue(expression, CHECK_OK);
-    }
-    Next();
-    return Expression::Default();
-  }
-  return expression;
-}
-
-
 PreParser::Expression PreParser::ParseLeftHandSideExpression(bool* ok) {
   // LeftHandSideExpression ::
   //   (NewExpression | MemberExpression) ...