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

src/runtime/runtime.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.
 
 #ifndef V8_RUNTIME_RUNTIME_H_
 #define V8_RUNTIME_RUNTIME_H_
 
 #include "src/allocation.h"
 #include "src/objects.h"
 #include "src/zone.h"
@@ skipping 116 matching lines @@
   F(DateLocalTimezone, 1, 1)       \
   F(DateToUTC, 1, 1)               \
   F(DateCacheVersion, 0, 1)        \
   F(DateField, 2 /* date object, field index */, 1)
 
 
 #define FOR_EACH_INTRINSIC_DEBUG(F)            \
   F(DebugBreak, 0, 1)                          \
   F(SetDebugEventListener, 2, 1)               \
   F(ScheduleBreak, 0, 1)                       \
+  F(DebugGetInternalProperties, 1, 1)          \
   F(DebugGetPropertyDetails, 2, 1)             \
   F(DebugGetProperty, 2, 1)                    \
   F(DebugPropertyTypeFromDetails, 1, 1)        \
   F(DebugPropertyAttributesFromDetails, 1, 1)  \
   F(DebugPropertyIndexFromDetails, 1, 1)       \
   F(DebugNamedInterceptorPropertyValue, 2, 1)  \
   F(DebugIndexedInterceptorElementValue, 2, 1) \
   F(CheckExecutionState, 1, 1)                 \
   F(GetFrameCount, 1, 1)                       \
   F(GetFrameDetails, 2, 1)                     \
@@ skipping 700 matching lines @@
   MUST_USE_RESULT static MaybeHandle<Object> CreateArrayLiteralBoilerplate(
       Isolate* isolate, Handle<FixedArray> literals,
       Handle<FixedArray> elements);
 
   static void WeakCollectionInitialize(
       Isolate* isolate, Handle<JSWeakCollection> weak_collection);
   static void WeakCollectionSet(Handle<JSWeakCollection> weak_collection,
                                 Handle<Object> key, Handle<Object> value);
   static bool WeakCollectionDelete(Handle<JSWeakCollection> weak_collection,
                                    Handle<Object> key);
+
+  static MaybeHandle<JSArray> GetInternalProperties(Isolate* isolate,
+                                                    Handle<Object>);
 };
 
 
 std::ostream& operator<<(std::ostream&, Runtime::FunctionId);
 
 //---------------------------------------------------------------------------
 // Constants used by interface to runtime functions.
 
 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> {};
 STATIC_ASSERT(LANGUAGE_END == 3);
 class DeclareGlobalsLanguageMode : public BitField<LanguageMode, 2, 2> {};
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_RUNTIME_RUNTIME_H_