Remove Object::IsSpecObject, use Object::IsJSReceiver instead.

src/runtime/runtime-proxy.cc

Index: src/runtime/runtime-proxy.cc
diff --git a/src/runtime/runtime-proxy.cc b/src/runtime/runtime-proxy.cc
index 72517195d925f1d84c8d242559aa9d19d7ab688f..a8ab23af4d042cec71502fb2c7569e9ffd9c06de 100644
--- a/src/runtime/runtime-proxy.cc
+++ b/src/runtime/runtime-proxy.cc
@@ -16,11 +16,11 @@ RUNTIME_FUNCTION(Runtime_CreateJSProxy) {
   DCHECK(args.length() == 2);
   CONVERT_ARG_HANDLE_CHECKED(Object, target, 0);
   CONVERT_ARG_HANDLE_CHECKED(Object, handler, 1);
-  if (!target->IsSpecObject()) {
+  if (!target->IsJSReceiver()) {
     THROW_NEW_ERROR_RETURN_FAILURE(
         isolate, NewTypeError(MessageTemplate::kProxyTargetNonObject));
   }
-  if (!handler->IsSpecObject()) {
+  if (!handler->IsJSReceiver()) {
     THROW_NEW_ERROR_RETURN_FAILURE(
         isolate, NewTypeError(MessageTemplate::kProxyHandlerNonObject));
   }