Issue 4127 - [emscripten] Convert subscription classes to C++ - Part 2

compiled/intrusive_ptr.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 52 matching lines @@
 template<typename T,
     class = typename std::enable_if<std::is_base_of<ref_counted,T>::value>::type>
 class intrusive_ptr
 {
 public:
   explicit intrusive_ptr()
       : mPointer(nullptr)
   {
   }
 
-  explicit intrusive_ptr(T* pointer)
+  explicit intrusive_ptr(T* pointer, bool addRef = true)
       : mPointer(pointer)
   {
-    // Raw pointers always had their reference count increased by whatever gave
-    // us the pointer so we don't need to do it here.
+    if (mPointer && addRef)
+      mPointer->AddRef();
   }
 
   intrusive_ptr(const intrusive_ptr& other)
       : mPointer(other.mPointer)
   {
     if (mPointer)
       mPointer->AddRef();
   }
 
   intrusive_ptr(intrusive_ptr&& other)
@@ skipping 120 matching lines @@
 inline bool operator==(const T* a, const intrusive_ptr<U>& b)
 {
   return a == b.get();
 }
 
 template<typename T, typename U>
 inline bool operator!=(const T* a, intrusive_ptr<U> const& b)
 {
   return a != b.get();
 }