[promises] Remove runtime call from fastpath in PromiseReject

src/builtins/builtins-promise.h

 // Copyright 2016 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/code-stub-assembler.h"
 
 namespace v8 {
 namespace internal {
 
 typedef compiler::Node Node;
@@ skipping 67 matching lines @@
   void PromiseFulfill(Node* context, Node* promise, Node* result,
                       v8::Promise::PromiseState status);
 
   Node* NewPromiseCapability(Node* context, Node* constructor,
                              Node* debug_event = nullptr);
 
   void BranchIfAccessCheckFailed(Node* context, Node* native_context,
                                  Node* promise_constructor, Node* executor,
                                  Label* if_noaccess);
 
+  void InternalPromiseReject(Node* context, Node* promise, Node* value,

[adamk, 2017/01/13 20:31:33]

Can this be protected?

[gsathya, 2017/01/13 21:12:40]

Changed this and the rest

+                             Node* debug_event);
+
  protected:
   void PromiseInit(Node* promise);
 
  private:
   Node* AllocateJSPromise(Node* context);
 };
 
 }  // namespace internal
 }  // namespace v8