[proxies] Implement Symbol/DONT_ENUM filtering for GetKeys()

src/runtime/runtime-object.cc

 // Copyright 2014 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/runtime/runtime-utils.h"
 
 #include "src/arguments.h"
 #include "src/bootstrapper.h"
 #include "src/debug/debug.h"
 #include "src/isolate-inl.h"
@@ skipping 959 matching lines @@
       return *result;
     }
   }
   return isolate->heap()->undefined_value();
 }
 
 
 RUNTIME_FUNCTION(Runtime_OwnKeys) {
   HandleScope scope(isolate);
   DCHECK(args.length() == 1);
-  CONVERT_ARG_CHECKED(JSObject, raw_object, 0);
-  Handle<JSObject> object(raw_object);
+  CONVERT_ARG_HANDLE_CHECKED(JSReceiver, object, 0);
 
   Handle<FixedArray> contents;
   ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
       isolate, contents, JSReceiver::GetKeys(object, JSReceiver::OWN_ONLY,
                                              SKIP_SYMBOLS, CONVERT_TO_STRING));
   return *isolate->factory()->NewJSArrayWithElements(contents);
 }
 
 
 RUNTIME_FUNCTION(Runtime_ToFastProperties) {
@@ skipping 582 matching lines @@
 
 RUNTIME_FUNCTION(Runtime_ObjectDefineProperties) {
   HandleScope scope(isolate);
   DCHECK(args.length() == 2);
   CONVERT_ARG_HANDLE_CHECKED(Object, o, 0);
   CONVERT_ARG_HANDLE_CHECKED(Object, properties, 1);
   return JSReceiver::DefineProperties(isolate, o, properties);
 }
 }  // namespace internal
 }  // namespace v8