Introduce HasPendingMicrotasks API.

include/v8.h

 // Copyright 2012 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.
 
 /** \mainpage V8 API Reference Guide
  *
  * V8 is Google's open source JavaScript engine.
  *
  * This set of documents provides reference material generated from the
  * V8 header file, include/v8.h.
@@ skipping 4811 matching lines @@
    */
   void SetAutorunMicrotasks(bool autorun);
 
   /**
    * Experimental: Returns whether the Microtask Work Queue is automatically
    * run when the script call depth decrements to zero.
    */
   bool WillAutorunMicrotasks() const;
 
   /**
+   * Experimental: Returns whether the Microtask Work Queue has any more
+   * callbacks to run, not including the one that is currently being executed,
+   * if any.
+   */
+  bool HasPendingMicrotasks() const;
+
+  /**
    * Sets a callback for counting the number of times a feature of V8 is used.
    */
   void SetUseCounterCallback(UseCounterCallback callback);
 
   /**
    * Enables the host application to provide a mechanism for recording
    * statistics counters.
    */
   void SetCounterFunction(CounterLookupCallback);
 
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  */
 
 
 }  // namespace v8
 
 
 #undef TYPE_CHECK
 
 
 #endif  // V8_H_