[builtins] introduce AsyncBuiltinsAssembler for ES2016 features and beyond

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.
 
+#ifndef V8_BUILTINS_BUILTINS_PROMISE_H_
+#define V8_BUILTINS_BUILTINS_PROMISE_H_
+
 #include "src/code-stub-assembler.h"
 #include "src/contexts.h"
 
 namespace v8 {
 namespace internal {
 
 typedef compiler::Node Node;
 typedef CodeStubAssembler::ParameterMode ParameterMode;
 typedef compiler::CodeAssemblerState CodeAssemblerState;
 
@@ skipping 96 matching lines @@
                              bool debug_event);
   void InternalPromiseReject(Node* context, Node* promise, Node* value,
                              Node* debug_event);
 
  private:
   Node* AllocateJSPromise(Node* context);
 };
 
 }  // namespace internal
 }  // namespace v8
+
+#endif  // V8_BUILTINS_BUILTINS_PROMISE_H_