Revert of [regexp] Create property on result for each named capture

src/regexp/regexp-parser.cc

 // Copyright 2016 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/regexp/regexp-parser.h"
 
 #include "src/char-predicates-inl.h"
 #include "src/factory.h"
 #include "src/isolate.h"
 #include "src/objects-inl.h"
@@ skipping 752 matching lines @@
   return name;
 }
 
 bool RegExpParser::CreateNamedCaptureAtIndex(const ZoneVector<uc16>* name,
                                              int index) {
   DCHECK(FLAG_harmony_regexp_named_captures);
   DCHECK(unicode());
   DCHECK(0 < index && index <= captures_started_);
   DCHECK_NOT_NULL(name);
 
-  // Disallow captures named '__proto__'.
-  static const char16_t proto_string[] = u"__proto__";
-  if (name->size() == arraysize(proto_string) - 1) {
-    if (std::equal(name->begin(), name->end(), &proto_string[0])) {
-      ReportError(CStrVector("Illegal capture group name"));
-      return false;
-    }
-  }
-
   if (named_captures_ == nullptr) {
     named_captures_ = new (zone()) ZoneList<RegExpCapture*>(1, zone());
   } else {
     // Check for duplicates and bail if we find any.
     for (const auto& named_capture : *named_captures_) {
       if (*named_capture->name() == *name) {
         ReportError(CStrVector("Duplicate capture group name"));
         return false;
       }
     }
@@ skipping 1010 matching lines @@
     return false;
   }
   terms_.Add(new (zone()) RegExpQuantifier(min, max, quantifier_type, atom),
              zone());
   LAST(ADD_TERM);
   return true;
 }
 
 }  // namespace internal
 }  // namespace v8