[api] Add DefineProperty() method that skips interceptors.

include/v8.h

Index: include/v8.h
diff --git a/include/v8.h b/include/v8.h
index ca8c0347ffe720b829b8fb386fdd5145b7cc2190..7f491b95c1ec9667caaf5d6e432da99b231fa9be 100644
--- a/include/v8.h
+++ b/include/v8.h
@@ -456,7 +456,6 @@ class WeakCallbackInfo {
   void* embedder_fields_[kEmbedderFieldsInWeakCallback];
 };
 
-
 // kParameter will pass a void* parameter back to the callback, kInternalFields
 // will pass the first two internal fields back to the callback, kFinalizer
 // will pass a void* parameter back, but is invoked before the object is
@@ -2990,6 +2989,13 @@ enum class IndexFilter { kIncludeIndices, kSkipIndices };
 enum class IntegrityLevel { kFrozen, kSealed };
 
 /**
+ * DONT_SKIP_INTERCEPTORS is the default behaviour and triggers the definer
+ * interceptor when setting an own property on an object using
+ * DefineProperty, while SKIP_INTERCEPTORS bypasses the interceptors.
+ */
+enum CallInterceptors { DONT_SKIP_INTERCEPTORS, SKIP_INTERCEPTORS };

[jochen (gone - plz use gerrit), 2017/05/29 19:45:38]

please use enum class CallInterceptors { kSkip, kDontSkip } or similar

+
+/**
  * A JavaScript object (ECMA-262, 4.3.3)
  */
 class V8_EXPORT Object : public Value {
@@ -3026,7 +3032,8 @@ class V8_EXPORT Object : public Value {
   // Returns true on success.
   V8_WARN_UNUSED_RESULT Maybe<bool> DefineOwnProperty(
       Local<Context> context, Local<Name> key, Local<Value> value,
-      PropertyAttribute attributes = None);
+      PropertyAttribute attributes = None,
+      CallInterceptors call_interceptors = DONT_SKIP_INTERCEPTORS);
 
   // Implements Object.DefineProperty(O, P, Attributes), see Ecma-262 19.1.2.4.
   //
@@ -3040,9 +3047,13 @@ class V8_EXPORT Object : public Value {
   //
   // The PropertyDescriptor can change when redefining a property.
   //
+  // CallInterceptors call_interceptors = SKIP_INTERCEPTORS
+  //  bypasses interceptors when setting property on an object.
+  //
   // Returns true on success.
   V8_WARN_UNUSED_RESULT Maybe<bool> DefineProperty(
-      Local<Context> context, Local<Name> key, PropertyDescriptor& descriptor);
+      Local<Context> context, Local<Name> key, PropertyDescriptor& descriptor,
+      CallInterceptors call_interceptors = DONT_SKIP_INTERCEPTORS);
 
   // Sets an own property on this object bypassing interceptors and
   // overriding accessors or read-only properties.