Add experimental, non-snapshotted V8 extras

src/flag-definitions.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // This file defines all of the flags.  It is separated into different section,
 // for Debug, Release, Logging and Profiling, etc.  To add a new flag, find the
 // correct section, and use one of the DEFINE_ macros, without a trailing ';'.
 //
 // This include does not have a guard, because it is a template-style include,
 // which can be included multiple times in different modes.  It expects to have
@@ skipping 149 matching lines @@
 #define DEFINE_ALIAS_FLOAT(alias, nam) FLAG_ALIAS(FLOAT, double, alias, nam)
 #define DEFINE_ALIAS_STRING(alias, nam) \
   FLAG_ALIAS(STRING, const char*, alias, nam)
 #define DEFINE_ALIAS_ARGS(alias, nam) FLAG_ALIAS(ARGS, JSArguments, alias, nam)
 
 //
 // Flags in all modes.
 //
 #define FLAG FLAG_FULL
 
+DEFINE_BOOL(experimental_extras, false,
+            "enable code compiled in via v8_experimental_extra_library_files")
+
 // Flags for language modes and experimental language features.
 DEFINE_BOOL(use_strict, false, "enforce strict mode")
 DEFINE_BOOL(use_strong, false, "enforce strong mode")
 DEFINE_IMPLICATION(use_strong, use_strict)
 
 DEFINE_BOOL(strong_mode, false, "experimental strong language mode")
 DEFINE_IMPLICATION(use_strong, strong_mode)
 DEFINE_BOOL(strong_this, true, "don't allow 'this' to escape from constructors")
 
 DEFINE_BOOL(es_staging, false, "enable all completed harmony features")
@@ skipping 912 matching lines @@
 #undef DEFINE_ALIAS_FLOAT
 #undef DEFINE_ALIAS_ARGS
 
 #undef FLAG_MODE_DECLARE
 #undef FLAG_MODE_DEFINE
 #undef FLAG_MODE_DEFINE_DEFAULTS
 #undef FLAG_MODE_META
 #undef FLAG_MODE_DEFINE_IMPLICATIONS
 
 #undef COMMA