Issue 6064 - Put C++ code into a configurable namespace

compiled/library.h

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-present 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
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with Adblock Plus.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 #pragma once
 
+#include "base.h"
+
+ABP_NS_BEGIN
+
 class String;
 class Filter;
 class Subscription;
 
 namespace FilterNotifier
 {
   enum class Topic;
 }
 
+ABP_NS_END
+
 extern "C"
 {
-  void LogString(const String& str);
+  void LogString(const ABP_NS::String& str);
   void LogInteger(int i);
   void LogPointer(const void* ptr);
-  void LogError(const String& str);
+  void LogError(const ABP_NS::String& str);
   char16_t CharToLower(char16_t charCode);
-  void JSNotifyFilterChange(FilterNotifier::Topic topic, Filter& filter,
-      Subscription* subscription, unsigned int position);
-  void JSNotifySubscriptionChange(FilterNotifier::Topic topic,
-      Subscription& subscription);
-  int GenerateRegExp(const String& regexp, bool matchCase);
+  void JSNotifyFilterChange(ABP_NS::FilterNotifier::Topic topic, ABP_NS::Filter& filter,
+      ABP_NS::Subscription* subscription, unsigned int position);
+  void JSNotifySubscriptionChange(ABP_NS::FilterNotifier::Topic topic,
+      ABP_NS::Subscription& subscription);
+  int GenerateRegExp(const ABP_NS::String& regexp, bool matchCase);
   void DeleteRegExp(int id);
-  bool TestRegExp(int id, const String& str);
+  bool TestRegExp(int id, const ABP_NS::String& str);
 }