Issue #3593 - Make isolate a fully internal member of the engine

test/BaseJsTest.h

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-2016 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 71 matching lines @@
 class LazyFileSystem : public AdblockPlus::FileSystem
 {
 public:
   std::shared_ptr<std::istream> Read(const std::string& path) const
   {
     std::string dummyData("");
     if (path == "patterns.ini")
       dummyData = "# Adblock Plus preferences\n[Subscription]\nurl=~fl~";
     else if (path == "prefs.json")
       dummyData = "{}";
-    return std::shared_ptr<std::istream>(new std::istringstream(dummyData));
+    return std::make_shared<std::istringstream>(dummyData);
   }
 
   void Write(const std::string& path, std::shared_ptr<std::istream> content)
   {
   }
 
   void Move(const std::string& fromPath, const std::string& toPath)
   {
   }
 
@@ skipping 76 matching lines @@
 
 class BaseJsTest : public ::testing::Test
 {
 protected:
   AdblockPlus::JsEnginePtr jsEngine;
   virtual void SetUp();
   virtual void TearDown();
 };
 
 #endif