Fix error handling in Date.prototype.toISOString.

src/macros.py

 # Copyright 2006-2009 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 64 matching lines @@
 const kYearShift          = 9;
 const kMonthShift         = 5;
 
 # Limits for parts of the date, so that we support all the dates that
 # ECMA 262 - 15.9.1.1 requires us to, but at the same time be sure that
 # the date (days since 1970) is in SMI range.
 const kMinYear  = -1000000;
 const kMaxYear  = 1000000;
 const kMinMonth = -10000000;
 const kMaxMonth = 10000000;
-const kMinDate  = -100000000;
-const kMaxDate  = 100000000;
 
 # Native cache ids.
 const STRING_TO_REGEXP_CACHE_ID = 0;
 
 # Type query macros.
 #
 # Note: We have special support for typeof(foo) === 'bar' in the compiler.
 #       It will *not* generate a runtime typeof call for the most important
 #       values of 'bar'.
 macro IS_NULL(arg)              = (arg === null);
@@ skipping 102 matching lines @@
 const TYPE_EXTENSION = 1;
 const TYPE_NORMAL = 2;
 
 # Matches Script::CompilationType from objects.h
 const COMPILATION_TYPE_HOST = 0;
 const COMPILATION_TYPE_EVAL = 1;
 const COMPILATION_TYPE_JSON = 2;
 
 # Matches Messages::kNoLineNumberInfo from v8.h
 const kNoLineNumberInfo = 0;