Provide accessor for object internal properties that doesn't require debugger to be active

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/base/utils/random-number-generator.h"
 #include "src/code-stubs.h"
@@ skipping 1594 matching lines @@
   INSTALL_NATIVE(JSFunction, "$toUint32", to_uint32_fun);
   INSTALL_NATIVE(JSFunction, "$toInt32", to_int32_fun);
   INSTALL_NATIVE(JSFunction, "$toLength", to_length_fun);
 
   INSTALL_NATIVE(JSFunction, "$globalEval", global_eval_fun);
   INSTALL_NATIVE(JSFunction, "$getStackTraceLine", get_stack_trace_line_fun);
   INSTALL_NATIVE(JSFunction, "$toCompletePropertyDescriptor",
                  to_complete_property_descriptor);
 
   INSTALL_NATIVE(Symbol, "$promiseStatus", promise_status);
+  INSTALL_NATIVE(Symbol, "$promiseValue", promise_value);
   INSTALL_NATIVE(JSFunction, "$promiseCreate", promise_create);
   INSTALL_NATIVE(JSFunction, "$promiseResolve", promise_resolve);
   INSTALL_NATIVE(JSFunction, "$promiseReject", promise_reject);
   INSTALL_NATIVE(JSFunction, "$promiseChain", promise_chain);
   INSTALL_NATIVE(JSFunction, "$promiseCatch", promise_catch);
   INSTALL_NATIVE(JSFunction, "$promiseThen", promise_then);
 
   INSTALL_NATIVE(JSFunction, "$observeNotifyChange", observers_notify_change);
   INSTALL_NATIVE(JSFunction, "$observeEnqueueSpliceRecord",
                  observers_enqueue_splice);
@@ skipping 1396 matching lines @@
   return from + sizeof(NestingCounterType);
 }
 
 
 // Called when the top-level V8 mutex is destroyed.
 void Bootstrapper::FreeThreadResources() {
   DCHECK(!IsActive());
 }
 
 } }  // namespace v8::internal