Unify function name validation in Parser and PreParser.

src/preparser.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 598 matching lines @@
   Expression ParseNewExpression(bool* ok);
   Expression ParseMemberExpression(bool* ok);
   Expression ParseMemberWithNewPrefixesExpression(unsigned new_count, bool* ok);
   Expression ParsePrimaryExpression(bool* ok);
   Expression ParseArrayLiteral(bool* ok);
   Expression ParseObjectLiteral(bool* ok);
   Expression ParseRegExpLiteral(bool seen_equal, bool* ok);
   Expression ParseV8Intrinsic(bool* ok);
 
   Arguments ParseArguments(bool* ok);
-  Expression ParseFunctionLiteral(bool is_generator, bool* ok);
+  Expression ParseFunctionLiteral(
+      Identifier name,
+      Scanner::Location function_name_location,
+      bool name_is_strict_reserved,
+      bool is_generator,
+      bool* ok);
   void ParseLazyFunctionLiteralBody(bool* ok);
 
   Identifier ParseIdentifier(AllowEvalOrArgumentsAsIdentifier, bool* ok);
+  Identifier ParseIdentifierOrStrictReservedWord(bool* is_strict_reserved,
+                                                 bool* ok);
   Identifier ParseIdentifierName(bool* ok);
   Identifier ParseIdentifierNameOrGetOrSet(bool* is_get,
                                            bool* is_set,
                                            bool* ok);
 
   // Logs the currently parsed literal as a symbol in the preparser data.
   void LogSymbol();
   // Log the currently parsed identifier.
   Identifier GetIdentifierSymbol();
   // Log the currently parsed string literal.
@@ skipping 28 matching lines @@
   ParserRecorder* log_;
   Scope* scope_;
   Scanner::Location strict_mode_violation_location_;
   const char* strict_mode_violation_type_;
   bool parenthesized_function_;
 };
 
 } }  // v8::internal
 
 #endif  // V8_PREPARSER_H