Issue 4983 - Get rid of Sleep() in the WebRequest test

include/AdblockPlus/JsEngine.h

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-2017 eyeo GmbH
  *
  * Adblock Plus is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * Adblock Plus is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 13 matching lines @@
 #include <stdexcept>
 #include <stdint.h>
 #include <string>
 #include <mutex>
 #include <AdblockPlus/AppInfo.h>
 #include <AdblockPlus/LogSystem.h>
 #include <AdblockPlus/IFileSystem.h>
 #include <AdblockPlus/JsValue.h>
 #include <AdblockPlus/IWebRequest.h>
 #include <AdblockPlus/ITimer.h>
+#include <AdblockPlus/Scheduler.h>
 
 namespace v8
 {
   class Isolate;
   class Value;
   class Context;
   template<typename T> class FunctionCallbackInfo;
   typedef void(*FunctionCallback)(const FunctionCallbackInfo<v8::Value>& info);
 }
 
@@ skipping 12 matching lines @@
   TimerPtr CreateDefaultTimer();
 
   /**
    * A factory to construct DefaultFileSystem.
    */
   FileSystemPtr CreateDefaultFileSystem();
 
   /**
    * A factory to construct DefaultWebRequest.
    */
-  WebRequestPtr CreateDefaultWebRequest();
+  WebRequestPtr CreateDefaultWebRequest(const Scheduler& scheduler);
 
   /**
    * A factory to construct LogSystem.
    */
   LogSystemPtr CreateDefaultLogSystem();
 
   /**
    * Scope based isolate manager. Creates a new isolate instance on
    * constructing and disposes it on destructing.
    */
@@ skipping 242 matching lines @@
     EventMap eventCallbacks;
     std::mutex eventCallbacksMutex;
     JsWeakValuesLists jsWeakValuesLists;
     std::mutex jsWeakValuesListsMutex;
     TimerPtr timer;
     WebRequestPtr webRequest;
   };
 }
 
 #endif