Rely on libadblockplus for domain extraction

src/engine/Main.cpp

 #include <AdblockPlus.h>
 #include <functional>
 #include <vector>
 #include <Windows.h>
 
 #include "../shared/AutoHandle.h"
 #include "../shared/Communication.h"
 #include "../shared/Dictionary.h"
 #include "../shared/Utils.h"
 #include "../shared/Version.h"
@@ skipping 296 matching lines @@
       {
         response << ToUtf16String(filterEngine->GetPref("documentation_link")->AsString());
         break;
       }
       case Communication::PROC_TOGGLE_PLUGIN_ENABLED:
       {
         filterEngine->SetPref("enabled", filterEngine->GetJsEngine()->NewValue(!filterEngine->GetPref("enabled")->AsBool()));
         response << filterEngine->GetPref("enabled")->AsBool();
         break;
       }
+      case Communication::PROC_GET_HOST:
+      {
+        std::string url;
+        request >> url;
+        std::string host = filterEngine->GetHostFromURL(url);
+        if (host.empty())
+        {
+          response << url;
+        }
+        else
+        {
+          response << host;
+        }
+        break;
+      }
     }
     return response;
   }
 
   DWORD WINAPI ClientThread(LPVOID param)
   {
     std::auto_ptr<Communication::Pipe> pipe(static_cast<Communication::Pipe*>(param));
 
     std::stringstream stream;
     stream << GetCurrentThreadId();
@@ skipping 121 matching lines @@
     }
     catch (std::runtime_error e)
     {
       DebugException(e);
       return 1;
     }
   }
 
   return 0;
 }