[api] Minor improvement to documentation for kNonMasking.

include/v8.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.
 
 /** \mainpage V8 API Reference Guide
  *
  * V8 is Google's open source JavaScript engine.
  *
  * This set of documents provides reference material generated from the
  * V8 header file, include/v8.h.
@@ skipping 4974 matching lines @@
    * template.
    */
   bool HasInstance(Local<Value> object);
 
  private:
   FunctionTemplate();
   friend class Context;
   friend class ObjectTemplate;
 };
 
-
 enum class PropertyHandlerFlags {
   kNone = 0,
   // See ALL_CAN_READ above.
   kAllCanRead = 1,
   // Will not call into interceptor for properties on the receiver or prototype
-  // chain.  Currently only valid for named interceptors.
+  // chain, i.e., only call into interceptor for properties that do not exist.
+  // Currently only valid for named interceptors.
   kNonMasking = 1 << 1,
   // Will not call into interceptor for symbol lookup.  Only meaningful for
   // named interceptors.
   kOnlyInterceptStrings = 1 << 2,
 };
 
-
 struct NamedPropertyHandlerConfiguration {
   NamedPropertyHandlerConfiguration(
       /** Note: getter is required **/
       GenericNamedPropertyGetterCallback getter = 0,
       GenericNamedPropertySetterCallback setter = 0,
       GenericNamedPropertyQueryCallback query = 0,
       GenericNamedPropertyDeleterCallback deleter = 0,
       GenericNamedPropertyEnumeratorCallback enumerator = 0,
       Local<Value> data = Local<Value>(),
       PropertyHandlerFlags flags = PropertyHandlerFlags::kNone)
@@ skipping 4414 matching lines @@
  */
 
 
 }  // namespace v8
 
 
 #undef TYPE_CHECK
 
 
 #endif  // INCLUDE_V8_H_