Reland "Use symbols instead of hidden properties for i18n markers."

src/runtime/runtime.cc

 // 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.
 
 #include <stdlib.h>
 #include <limits>
 
 #include "src/v8.h"
 
 #include "src/accessors.h"
@@ skipping 1022 matching lines @@
     ASSIGN_RETURN_ON_EXCEPTION(isolate, converted,
                                Execution::ToString(isolate, key), Object);
     name = Handle<String>::cast(converted);
   }
 
   if (name->IsString()) name = String::Flatten(Handle<String>::cast(name));
   return JSReceiver::DeleteProperty(receiver, name, mode);
 }
 
 
-RUNTIME_FUNCTION(Runtime_SetHiddenProperty) {
-  HandleScope scope(isolate);
-  RUNTIME_ASSERT(args.length() == 3);
-
-  CONVERT_ARG_HANDLE_CHECKED(JSObject, object, 0);
-  CONVERT_ARG_HANDLE_CHECKED(String, key, 1);
-  CONVERT_ARG_HANDLE_CHECKED(Object, value, 2);
-  RUNTIME_ASSERT(key->IsUniqueName());
-  return *JSObject::SetHiddenProperty(object, key, value);
-}
-
-
 RUNTIME_FUNCTION(Runtime_AddNamedProperty) {
   HandleScope scope(isolate);
   RUNTIME_ASSERT(args.length() == 4);
 
   CONVERT_ARG_HANDLE_CHECKED(JSObject, object, 0);
   CONVERT_ARG_HANDLE_CHECKED(Name, key, 1);
   CONVERT_ARG_HANDLE_CHECKED(Object, value, 2);
   CONVERT_SMI_ARG_CHECKED(unchecked_attributes, 3);
   RUNTIME_ASSERT(
       (unchecked_attributes & ~(READ_ONLY | DONT_ENUM | DONT_DELETE)) == 0);
@@ skipping 2369 matching lines @@
   }
   return NULL;
 }
 
 
 const Runtime::Function* Runtime::FunctionForId(Runtime::FunctionId id) {
   return &(kIntrinsicFunctions[static_cast<int>(id)]);
 }
 }
 }  // namespace v8::internal