[regexp] Named capture support for callable replacements

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index faee6b6ba6514476b1f673c9babe6f1163c733f7..cbd568e11275657768598f5abbb9565bfb15d70b 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -1965,6 +1965,9 @@ class JSReceiver: public HeapObject {
   // ES6 7.3.4 (when passed DONT_THROW)
   MUST_USE_RESULT static Maybe<bool> CreateDataProperty(
       LookupIterator* it, Handle<Object> value, ShouldThrow should_throw);
+  MUST_USE_RESULT static Maybe<bool> CreateDataProperty(
+      Handle<JSReceiver> holder, Handle<Object> key, Handle<Object> value,
+      ShouldThrow should_throw);
 
   // ES6 9.1.6.1
   MUST_USE_RESULT static Maybe<bool> OrdinaryDefineOwnProperty(
@@ -8543,6 +8546,7 @@ class JSRegExp: public JSObject {
   inline int CaptureCount();
   inline Flags GetFlags();
   inline String* Pattern();
+  inline Object* CaptureNameMap();
   inline Object* DataAt(int index);
   // Set implementation data after the object has been prepared.
   inline void SetDataAt(int index, Object* value);