[proxies] Implement [[Enumerate]] and [[OwnPropertyKeys]]

src/messages.h

 // Copyright 2006-2008 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.
 
 // The infrastructure used for (localized) message reporting in V8.
 //
 // Note: there's a big unresolved issue about ownership of the data
 // structures used by this framework.
 
 #ifndef V8_MESSAGES_H_
@@ skipping 131 matching lines @@
   T(NonObjectPropertyLoad, "Cannot read property '%' of %")                    \
   T(NonObjectPropertyStore, "Cannot set property '%' of %")                    \
   T(NoSetterInCallback, "Cannot set property % of % which has only a getter")  \
   T(NotAnIterator, "% is not an iterator")                                     \
   T(NotAPromise, "% is not a promise")                                         \
   T(NotConstructor, "% is not a constructor")                                  \
   T(NotDateObject, "this is not a Date object.")                               \
   T(NotIntlObject, "% is not an i18n object.")                                 \
   T(NotGeneric, "% is not generic")                                            \
   T(NotIterable, "% is not iterable")                                          \
+  T(NotPropertyName, "% is not a valid property name")                         \
   T(NotTypedArray, "this is not a typed array.")                               \
   T(NotSharedTypedArray, "% is not a shared typed array.")                     \
   T(NotIntegerSharedTypedArray, "% is not an integer shared typed array.")     \
   T(NotInt32SharedTypedArray, "% is not an int32 shared typed array.")         \
   T(ObjectGetterExpectingFunction,                                             \
     "Object.prototype.__defineGetter__: Expecting function")                   \
   T(ObjectGetterCallable, "Getter must be a function: %")                      \
   T(ObjectNotExtensible, "Can't add property %, object is not extensible")     \
   T(ObjectSetterExpectingFunction,                                             \
     "Object.prototype.__defineSetter__: Expecting function")                   \
@@ skipping 37 matching lines @@
     "Proxy handler % returned non-configurable descriptor for property '%' "   \
     "from '%' trap")                                                           \
   T(ProxyRepeatedPropName, "Trap '%' returned repeated property name '%'")     \
   T(ProxyRevoked, "Cannot perform '%' on a proxy that has been revoked")       \
   T(ProxyTargetNotExtensible, "Proxy target is not extensible")                \
   T(ProxyTargetNonObject, "Proxy target is non-object")                        \
   T(ProxyTargetPropNotConfigurable,                                            \
     "Proxy target property '%' is not configurable")                           \
   T(ProxyTrapFunctionExpected,                                                 \
     "Proxy.createFunction called with non-function for '%' trap")              \
+  T(ProxyTrapResultMustInclude, "Trap result must include %.")                 \
   T(RedefineDisallowed, "Cannot redefine property: %")                         \
   T(RedefineExternalArray,                                                     \
     "Cannot redefine a property of an object with external array elements")    \
   T(ReduceNoInitial, "Reduce of empty array with no initial value")            \
   T(RegExpFlags,                                                               \
     "Cannot supply flags when constructing one RegExp from another")           \
   T(RegExpNonObject, "% getter called on non-object %")                        \
   T(RegExpNonRegExp, "% getter called on non-RegExp object")                   \
   T(ReinitializeIntl, "Trying to re-initialize % object.")                     \
   T(ResolvedOptionsCalledOnNonObject,                                          \
@@ skipping 290 matching lines @@
   static MUST_USE_RESULT MaybeHandle<String> GetStringifiedProperty(
       Isolate* isolate, LookupIterator* property_lookup,
       Handle<String> default_value);
 
   List<Handle<JSObject> > visited_;
 };
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_MESSAGES_H_