[builtins] HasOwnProperty: handle non-internalized string keys

src/objects-inl.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.
 //
 // Review notes:
 //
 // - The use of macros in these inline functions may seem superfluous
 // but it is absolutely needed to make sure gcc generates optimal
 // code. gcc is not happy when attempting to inline too deep.
 //
@@ skipping 813 matching lines @@
       return GetUnderlying()->IsTwoByteRepresentation();
   }
 }
 
 bool String::HasOnlyOneByteChars() {
   uint32_t type = map()->instance_type();
   return (type & kOneByteDataHintMask) == kOneByteDataHintTag ||
          IsOneByteRepresentation();
 }
 
+bool StringShape::HasOnlyOneByteChars() {
+  return (type_ & kStringEncodingMask) == kOneByteStringTag ||
+         (type_ & kOneByteDataHintMask) == kOneByteDataHintTag;
+}
+
 bool StringShape::IsCons() {
   return (type_ & kStringRepresentationMask) == kConsStringTag;
 }
 
 bool StringShape::IsThin() {
   return (type_ & kStringRepresentationMask) == kThinStringTag;
 }
 
 bool StringShape::IsSliced() {
   return (type_ & kStringRepresentationMask) == kSlicedStringTag;
@@ skipping 7426 matching lines @@
 #undef WRITE_BYTE_FIELD
 #undef NOBARRIER_READ_BYTE_FIELD
 #undef NOBARRIER_WRITE_BYTE_FIELD
 
 }  // namespace internal
 }  // namespace v8
 
 #include "src/objects/object-macros-undef.h"
 
 #endif  // V8_OBJECTS_INL_H_