Hide native Date implementation in function context.

src/bootstrapper.cc

 // Copyright 2014 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 "src/bootstrapper.h"
 
 #include "src/accessors.h"
 #include "src/api-natives.h"
 #include "src/code-stubs.h"
 #include "src/extensions/externalize-string-extension.h"
@@ skipping 1520 matching lines @@
   Handle<String> var##_name =                                               \
       factory()->InternalizeOneByteString(STATIC_CHAR_VECTOR(name));        \
   Handle<Object> var##_native =                                             \
       Object::GetProperty(handle(native_context()->builtins()), var##_name) \
           .ToHandleChecked();                                               \
   native_context()->set_##var(Type::cast(*var##_native));
 
 
 void Genesis::InstallNativeFunctions() {
   HandleScope scope(isolate());
-  INSTALL_NATIVE(JSFunction, "CreateDate", create_date_fun);
+  INSTALL_NATIVE(JSFunction, "$createDate", create_date_fun);
 
   INSTALL_NATIVE(JSFunction, "ToNumber", to_number_fun);
   INSTALL_NATIVE(JSFunction, "ToString", to_string_fun);
   INSTALL_NATIVE(JSFunction, "ToDetailString", to_detail_string_fun);
   INSTALL_NATIVE(JSFunction, "ToObject", to_object_fun);
   INSTALL_NATIVE(JSFunction, "ToInteger", to_integer_fun);
   INSTALL_NATIVE(JSFunction, "ToUint32", to_uint32_fun);
   INSTALL_NATIVE(JSFunction, "ToInt32", to_int32_fun);
   INSTALL_NATIVE(JSFunction, "ToLength", to_length_fun);
 
@@ skipping 1372 matching lines @@
   return from + sizeof(NestingCounterType);
 }
 
 
 // Called when the top-level V8 mutex is destroyed.
 void Bootstrapper::FreeThreadResources() {
   DCHECK(!IsActive());
 }
 
 } }  // namespace v8::internal