Revert "Move ParseUnaryExpression into ParserBase and add tests."

src/preparser.cc

Index: src/preparser.cc
diff --git a/src/preparser.cc b/src/preparser.cc
index 398f32744cb61ff6c5e5af317d22b8d117f37b9f..8a621b4ff2455b1888e7bbd06ac2bc15258a9063 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::ParseUnaryExpression(bool* ok) {
+  return pre_parser_->ParseUnaryExpression(ok);
 }
 
 
@@ -842,6 +842,37 @@ PreParser::Statement PreParser::ParseDebuggerStatement(bool* ok) {
 #undef DUMMY
 
 
+PreParser::Expression PreParser::ParseUnaryExpression(bool* ok) {
+  // UnaryExpression ::
+  //   PostfixExpression
+  //   'delete' UnaryExpression
+  //   'void' UnaryExpression
+  //   'typeof' UnaryExpression
+  //   '++' UnaryExpression
+  //   '--' UnaryExpression
+  //   '+' UnaryExpression
+  //   '-' UnaryExpression
+  //   '~' UnaryExpression
+  //   '!' UnaryExpression
+
+  Token::Value op = peek();
+  if (Token::IsUnaryOp(op)) {
+    op = Next();
+    ParseUnaryExpression(ok);
+    return Expression::Default();
+  } else if (Token::IsCountOp(op)) {
+    op = Next();
+    Expression expression = ParseUnaryExpression(CHECK_OK);
+    if (strict_mode() == STRICT) {
+      CheckStrictModeLValue(expression, CHECK_OK);
+    }
+    return Expression::Default();
+  } else {
+    return ParsePostfixExpression(ok);
+  }
+}
+
+
 PreParser::Expression PreParser::ParsePostfixExpression(bool* ok) {
   // PostfixExpression ::
   //   LeftHandSideExpression ('++' | '--')?