Store i18n meta data in hidden symbols instead of js accessible properties

src/runtime.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 473 matching lines @@
 
 
 #ifdef V8_I18N_SUPPORT
 #define RUNTIME_FUNCTION_LIST_I18N_SUPPORT(F) \
   /* i18n support */ \
   /* Standalone, helper methods. */ \
   F(CanonicalizeLanguageTag, 1, 1) \
   F(AvailableLocalesOf, 1, 1) \
   F(GetDefaultICULocale, 0, 1) \
   F(GetLanguageTagVariants, 1, 1) \
+  F(IsInitializedIntlObject, 1, 1) \
+  F(IsInitializedIntlObjectOfType, 2, 1) \
+  F(MarkAsInitializedIntlObjectOfType, 3, 1) \
+  F(GetImplFromInitializedIntlObject, 1, 1) \
   \
   /* Date format and parse. */ \
   F(CreateDateTimeFormat, 3, 1) \
   F(InternalDateFormat, 2, 1) \
   F(InternalDateParse, 2, 1) \
   \
   /* Number format and parse. */ \
   F(CreateNumberFormat, 3, 1) \
   F(InternalNumberFormat, 2, 1) \
   F(InternalNumberParse, 2, 1) \
@@ skipping 404 matching lines @@
 class AllocateDoubleAlignFlag:  public BitField<bool,            0, 1> {};
 class AllocateTargetSpace:      public BitField<AllocationSpace, 1, 3> {};
 
 class DeclareGlobalsEvalFlag:   public BitField<bool,       0, 1> {};
 class DeclareGlobalsNativeFlag: public BitField<bool,       1, 1> {};
 class DeclareGlobalsStrictMode: public BitField<StrictMode, 2, 1> {};
 
 } }  // namespace v8::internal
 
 #endif  // V8_RUNTIME_H_