Proof of concept: Use a single FilterEngine instance

Shared/PluginFilter.cpp

 #include "PluginStdAfx.h"
 
 #include "PluginFilter.h"
 
 #if (defined PRODUCT_ADBLOCKPLUS)
 #include "PluginSettings.h"
 #include "PluginClient.h"
 #include "PluginClientFactory.h"
 #endif
 
@@ skipping 785 matching lines @@
     type = "???";
 
     std::map<int,CString>::const_iterator it = m_contentMapText.find(contentType);
     if (it != m_contentMapText.end())
     {
       type = it->second;
     }
   }
 
   CPluginClient* client = CPluginClient::GetInstance();
-  AdblockPlus::FilterEngine* filterEngine = client->GetFilterEngine();
 
   //TODO: Make sure if the content type names are in sync with libadblockplus
   std::string contentTypeString = CT2A(type, CP_UTF8);
 
   CT2CA srcMb(src, CP_UTF8);
   std::string url(srcMb);
 
   std::string domainMb = CT2CA(domain);
 
-  if (filterEngine->Matches(url, contentTypeString, domainMb))
+  if (client->Matches(url, contentTypeString, domainMb))
   {
     if (addDebug)
     {
       DEBUG_FILTER("Filter::ShouldBlock " + type + " YES")
 
 #ifdef ENABLE_DEBUG_RESULT
         CPluginDebug::DebugResultBlocking(type, src);
 #endif
     }
     return true;
@@ skipping 145 matching lines @@
   if (pos > 0 && domain.GetLength() + pos == subdomain.GetLength())
   {
     if (subdomain.GetAt(pos - 1) == '.')
     {
       return true;
     }
   }
 
   return false;
 }