Introduce PromiseRejectCallback.

src/bootstrapper.cc

Index: src/bootstrapper.cc
diff --git a/src/bootstrapper.cc b/src/bootstrapper.cc
index 250562a2aa17a0a8c47dfc8567b449b5ccade0f0..16f030803f5a80f4058b00081bb8ce381f4154da 100644
--- a/src/bootstrapper.cc
+++ b/src/bootstrapper.cc
@@ -1538,6 +1538,8 @@ void Genesis::InstallNativeFunctions() {
   INSTALL_NATIVE(JSFunction, "PromiseChain", promise_chain);
   INSTALL_NATIVE(JSFunction, "PromiseCatch", promise_catch);
   INSTALL_NATIVE(JSFunction, "PromiseThen", promise_then);
+  INSTALL_NATIVE(JSFunction, "PromiseHasRejectHandler",
+                 promise_has_reject_handler);
 
   INSTALL_NATIVE(JSFunction, "NotifyChange", observers_notify_change);
   INSTALL_NATIVE(JSFunction, "EnqueueSpliceRecord", observers_enqueue_splice);